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Factor structure of the inventory of adult temperament styles

Estrutura fatorial do inventário de estilos de temperamento de adultos

Abstracts

Temperament refers to stylistic and relatively stable traits that subsume intrinsic tendencies to act and react in somewhat predictable ways to people, events, and stimuli. Temperament can be defined by four bipolar styles: extroversion-introversion, practical-imaginative, thinking-feeling, and organized-flexible. These four styles provide the theoretical structure for the group administered Inventory of Adult Temperament Styles (IATS).Validity evidences are reported on 853 middle class adults (43% female), ages 15 through 54 (M = 26.5, SD = 8.6), who were studying at universities or working in Sao Paulo state (Brazil). The degree items are consistent with the four temperament styles was examined through item response theory and confirmatory factor analysis. Results confirm the proposed theoretical structure. Invariance testing suggests that scores reflecting temperament styles have similar meanings for men and women. Implications as well as future directions for research are discussed.

Assessment; type; styles; temperament; personality


O temperamento compreende estilos e traços relativamente estáveis que representam tendências para agir e reagir de formas previsíveis frente aos acontecimentos, pessoas ou estímulos. O temperamento pode ser definido por quatro estilos bipolares: extroversão-introversão, prático-imaginativo, pensamento-sentimento, organizado-flexível. Estes quatro estilos compuseram a estrutura teórica do Inventory of Adult Temperament Styles (IATS). As evidências de validade do IATS foram investigadas em uma amostra de 853 adultos (43% mulheres), idades entre 25-54 (M=26, DP=8,6), estudando ou trabalhando no estado de São Paulo. A adequação dos itens em relação aos quatro estilos de temperamento foi examinada através da teoria de resposta ao item e da análise fatorial confirmatória. Os resultados confirmaram a estrutura teórica proposta. O teste da invariância indicou que os estilos de temperamento observados possuem significados semelhantes para homens e mulheres. Implicações e sugestões para futuras pesquisas são discutidas.

Avaliação; tipo; estilos; temperamento; personalidade


The discipline of psychology and its clinical practices display an abiding interest in identifying, assessing, and describing temperament qualities that may have a pervasive and important role in shaping development, achieving mental health, and guiding life pursuits (Costa & McCrae, 2001Costa, P. T., Jr., & McCrae, R. R. (2001). A theoretical context for adult temperament. In T. D. Wachs & G. A. Kohnstamm (Eds.), Temperament in context (pp. 1-21): Mahwah, NJ: Lawrence Erlbaum.; Joyce, 2010Joyce, D. (2010). Essentials of temperament assessment. New York: Wiley.; McCaulley, 2000McCaulley, M. H. (2000). Myers-Briggs Type Indicator: A bridge between counseling & consulting. Consulting Psychology Journal: Practice and Research, 52(2), 117-132. doi:10.1037/1061-4087.52.2.117
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; Strelau & Zawadzki, 2011Strelau, J., & Zawadzki, B. (2011). Fearfulness and anxiety in research on temperament: Temperamental traits are related to anxiety disorders. Personality and Individual Differences, 50(7), 907-915. doi:10.1016/j.paid.2010.07.008
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). The importance attached to temperament is heightened, in part, by knowledge that temperament may provide important psychological insights on protective and risk factor - especially in children (Bayly & Gartstein, 2013Bayly, B., & Gartstein, M. (2013). Mother's and father's reports on their child's temperament: Does gender matter? Infant Behavior and Development, 36(1), 171-175. doi:10.1016/j.infbeh.2012.10.008
https://doi.org/10.1016/j.infbeh.2012.10...
; Klein & Linhares, 2010Klein, V. C., & Linhares, M. B. M. (2010). Temperamento e desenvolvimento da criança: Revisão sistemática da literatura. Psicologia em Estudo, 15(4), 821-829.; Mangelsdorf, McHale, Dieners, Goldstein, & Lehn, 2000Mangelsdorf, S. C., McHale, J. L., Dieners, M., Goldstein, L. H., & Lehn, L. (2000). Infant attachment: Contributions of infant temperament and maternal characteristics. Infant Behavior & Development, 23(2), 175-196. doi:10.1016/S0163-6383(01)00035-2
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; Mian, Wainwright, Briggs-Gowan, & Carter, 2011Mian, N. D., Wainwright, L., Briggs-Gowan, M. J., & Carter, A. S. (2011). An ecological risk model for early childhood anxiety: The importance of early child symptoms and temperament. Journal of Abnormal and Child Psychology, 39(4), 501-512. doi:10.1007/s10802-010-9476-0
https://doi.org/10.1007/s10802-010-9476-...
). Knowledge of temperament also increases our sensitivity to possible ages and cultural differences (Lara, Bisol, et al., 2012Lara, D. R., Ottoni, G. L., Brusntein, M. G., Frozi, H. W. C., & Bisol, L. W. (2012). Development and validity of the Brazilian Internet Study on Temperament and Psychopathology (BRAINSTEP). Journal of Affective Disorders, 141(2-3), 390-398. doi:10.1016/j.jad.2012.03.011
https://doi.org/10.1016/j.jad.2012.03.01...
; Lima, Lemos, & Gerra, 2010Lima, L., Lemos, M. S., & Gerra, M. P. (2010). Adaptação do Inventário de Temperamento para Crianças em Idade Escolar School Age Temperament Inventory - SATIDE de McLowry para uma população portuguesa. Psicologia, Saúde & Doença, 11(1), 55-70.; Quintana & Muñoz, 2010Quintana, T., & Muñoz, G. (2010). Validación y adaptación del Cuestionario de Temperamento y Caráter, JCTI de R. Cloninger, versión niños y padres, a escolares chilenos entre 8 y 13 años de edad. Terapia Psicológica, 28(1), 37-43.). The trait of temperament seemingly is somewhat stable over time for adolescents and adults (Bould, Joison, Sterne, & Araya, 2013Bould, H., Joinson, C., Sterne, J., & Araya, R. (2013). The Emotionality Activity Sociability Temperament Survey: Factor analysis and temporal stability in a longitudinal cohort. Personality and Individual Differences, 54, 628-633. doi:10.1016/j.paid.2012.11.010
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; Canals, Hernandez-Martínez, & Fernandez-Ballart, 2011Canals, J., Hernandez-Martínez, C., & Fernandez-Ballart, J. D. (2011). Relationships between early behavioural characteristics and temperament at 6 years. Infant Behavior and Development, 34, 152-160. doi:10.1016/j.infbeh.2010.11.003
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).

Contemporary research generally characterizes temperament as stylistic and relatively stable traits that subsume intrinsic (i.e., biological) tendencies to act and react in somewhat predictable ways to people and events (Casalin, Luyten, Vliegens, & Meurs, 2012Casalin, S., Luyten, P., Vliegens, N., & Meurs, P. (2012). The structure and stability of temperament from infancy to toddlerhood: A one-year prospective study. Infant Behavior & Development, 35, 94-108. doi:10.1016/j.infbeh.2011.08.004
https://doi.org/10.1016/j.infbeh.2011.08...
; Rothbart & Hwang, 2002Rothbart, M. K., & Hwang, J. (2002). Measuring infant temperament. Infant Behavior & Development, 25, 113-116. doi:10.1016/S0163-6383(02)00109-1
https://doi.org/10.1016/S0163-6383(02)00...
; Worobey, 2001Worobey, J. (2001). Associations between temperament and love attitudes in a college sample. Personality and Individual Differences, 31(3), 461-469. doi:10.1016/S01918869(00)00154-9
https://doi.org/10.1016/S01918869(00)001...
). Although the terms temperament and personality at times are used synonymously, differences exist in their origins, emergence, and robustness. In contrast to personality, the earlier emergence of temperament (Martin, García, Sanz, Arias, & Matamala, 2009Martin, J. M. R., García, M. J. S., Sanz, P. C., Arias, T. V., & Matamala, B. I. (2009). El temperamento infantil en el ámbito de la prevención primaria. Relación con el cociente de desarrollo y su modificablidad. Clínica y Salud, 20(1), 67-78.; Thomas & Chess, 1977Thomas, A., & Chess, S. (1977). Temperament and development. New York: Brunner., 1989Thomas, A., & Chess, S. (1989). Temperament and personality. In G. A. Kohnstamm, J. E. Bates, & M. K. Rothbart (Eds.), Temperament in childhood (pp. 249-261). New York: Wiley.; Walters, 2011Walters, G. D. (2011). Childhood temperament: Dimensions or types? Personality and Individual Differences, 50(8), 1168-1173. doi:10.1016/j.paid.2011.02.014
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) is attributable to its strongly biological origin. Moreover, while personality may include sixteen or more qualities including motivation and values (Goldsmith et al., 1987Goldsmith, H. H., Buss, A. H., Plomin, R., Rothbart, M. K., Thomas, A., Chess, S., ...McCall, R. B. (1987). Roundtable: What is temperament? Four approaches. Child Development, 58, 505-529. doi:10.1111/1467-8624.ep7253747
https://doi.org/10.1111/1467-8624.ep7253...
), temperament generally is characterized by fewer qualities - often four bipolar qualities.

A model of temperament types proposed by Jung (1943/1953, 1921/1971)Jung, C. G. (1953). Two essays on analytical psychology (R. F. C. Hull, Trans.). New York: Pantheon Books. (Original work published 1943) and modified and applied by Myers and Briggs in their Myers-Briggs Type Indicator (MBTI; Myers & Myers, 1980Myers, I. B., & Myers, P. B. (1980). Gifts differing. Palo Alto, CA: Consulting Psychologists Press.) has been used to examine adults' temperament qualities on four bipolar styles: extroversion-introversion, sensing-intuition, thinking-feeling, and judging-perception (McCaulley, 2000McCaulley, M. H. (2000). Myers-Briggs Type Indicator: A bridge between counseling & consulting. Consulting Psychology Journal: Practice and Research, 52(2), 117-132. doi:10.1037/1061-4087.52.2.117
https://doi.org/10.1037/1061-4087.52.2.1...
; Myers, McCaulley, Quenk, & Hammer, 1998Myers, I. B., McCaulley, M. H., Quenk, N. L., & Hammer, A. L. (1998). MBTI: Manual: A guide to the development and use of the Myers-Briggs type indicator. Palo Alto, CA: Consulting Psychologists Press.). The MBTI has been administered in many countries to identify behavioral styles, occupational interests and choices (Atay, 2012Atay, S. (2012). The standardization of Myers-Briggs Type Indicator into Turkish: An application on students. Journal of Instructional Psychology, 39(2), 74.; Chauvin, Müller, Godfrey, & Thomas, 2010Chauvin, I., Müller, M. J., Godfrey, L. L., & Thomas, D. (2010). Relationship between Holland's vocational typology and Myers-Briggs' types: Implications for career counselors. Psychology Journal, 7(2), 61-66.; Francis, 2006Francis, L. (2006). Psychological types of female trainee primary school teachers in Wales. Journal of Psychological Type, 2, 9-19. ; Jarlstrom & Valkealahti, 2010Jarlstrom, M., & Valkealahti, K. (2010). Person-job fit related to psychological type of finish business students and managers. Journal of Psychological Type, 4, 41-52. ; Kennedy & Kennedy, 2004Kennedy, R. B., & Kennedy, D. A. (2004). Using the Myers-Briggs type indicator in career counseling. Journal of Employment Counseling, 41, 38-44.; Kummerow & Maguire, 2010Kummerow, J. M., & Maguire, M. J. (2010). Using the Myers-Briggs indicator framework with an Adlerian perspective to increase collaborative problem solving in an organization. The Journal of Individual Psychology, 66(2), 189-199.). This model, in slightly revised form, is used internationally to assess children's temperament (Oakland, Glutting, & Horton, 1996Oakland, T., Glutting, J. J., & Horton, C. B. (1996). Student Styles Questionnaire. San Antonio, TX: Psychological Corporation.), and its four factor structure has been confirmed in various studies (Benson, Oakland, & Shermis, 2009Benson, N., Oakland, T., & Shermis, N. (2009). Cross-national invariance of children's temperament. Journal of Psychoeducational Assessment, 27(1), 3-16. doi:10.1177/0734282908318563
https://doi.org/10.1177/0734282908318563...
; Oakland, Stafford, Horton, & Glutting, 2001Oakland, T., Stafford, M., Horton, C., & Glutting, J. (2001). Temperament and vocational preferences: Age, gender, and racial-ethnic comparisons using the Student Styles Questionnaire. Journal of Career Assessment, 9, 297-314. doi:10.1177/106907270100900306
https://doi.org/10.1177/1069072701009003...
; Rowinski, Cieciuch, & Oakland, 2013Rowinski, T., Cieciuch, J., & Oakland, T. (2013). The factorial structure of four temperament styles and measuring invariance across gender and age groups. Journal of Psychoeducational Assessment, 32(1), 77-82. doi:10.1177/0734282913487045
https://doi.org/10.1177/0734282913487045...
). Table 1 summarizes important temperamental styles in light of this model.

Table 1
Descriptions of Temperament Qualities

Gender differences are found principally on thinking and feeling styles. These differences seemingly are universal (Boo & Kolk, 2006Boo, G. M., & Kolk, A. (2006). Ethnic and gender differences in temperament and the relationship between temperament and depressive and aggressive mood. Personality and Individual Differences, 43, 1756-1766. doi:10.1016/j.paid.2007.05.012
https://doi.org/10.1016/j.paid.2007.05.0...
; Hammer & Mitchell, 1996Hammer, A. L., & Mitchell, W. D. (1996). The distribution of MBTI types in the US by gender and ethnic group. Journal of Psychological Type, 37, 2-15. ) and help explain many male-female differences. For example, men generally prefer thinking styles while women generally prefer feeling styles. In contrast to men, women generally display higher personal sensitivity as well as a lower need for activity and intensity pleasure (Else-Quest, Hyde, Goldsmith, & Van Hulle, 2006Else-Quest, N. M., Hyde, J. S., Goldsmith, H. H., & Van Hulle, C. A. (2006). Gender differences in temperament: A meta-analysis. Psychological Bulletin, 132, 33-72. doi:10.1037/0033-2909.132.1.33
https://doi.org/10.1037/0033-2909.132.1....
; Francis, 2006Francis, L. (2006). Psychological types of female trainee primary school teachers in Wales. Journal of Psychological Type, 2, 9-19. ). Western societies generally value autonomy in men and relatedness and attachment in women (Luyten & Blatt, 2013Luyten, P., & Blatt, S. (2013). Interpersonal relatedness and self-definition in normal and disruptive personality development: Retrospect and prospect. American Psychologist, 68(3), 172-183. doi:10.1037/a0032243
https://doi.org/10.1037/a0032243...
; Wechsler, 2009Wechsler, S. M. (2009). Age and gender impact on thinking and creating styles. European Journal of Education and Psychology, 2(1), 37-48.). Gender differences on thinking-feeling were evident in most of the 21 countries in which children's temperament data have been studied (Callueng & Oakland, 2014Callueng, C., & Oakland, T. (2014). If you don't know the child's temperament you don't know the child. Estudos de Psicologia (Campinas), 31, 3-13. doi:10.1590/0103-166X2014000100001
https://doi.org/10.1590/0103-166X2014000...
; Joyce, 2010Joyce, D. (2010). Essentials of temperament assessment. New York: Wiley.).

Brazilian scholarship on temperament focuses mainly on maternal childrearing (Malhado & Alvarenga, 2012Malhado, S. C. B., & Alvarenga, P. (2012). Relações entre o temperamento infantil aos oito meses e as práticas educativas maternas aos 18 meses de vida. Estudos de Psicologia (Campinas), 29(Supl. 1), 787-797. doi:10.1590/S0103-166X2012000500015
https://doi.org/10.1590/S0103-166X201200...
; Melchiori, Alves, Souza, & Bugliani, 2007Melchiori, L., Alves, Z. M. M. B., Souza, D. C., & Bugliani, M. A. P. (2007). Família e creche: Crenças a respeito de temperamento e desempenho de bebês. Psicologia, Teoria e Pesquisa, 23(3), 245-252. doi:doi.org/10.1590/S1413-35552011005000015
https://doi.org/10.1590/S1413-3555201100...
) or pathological characteristics related to temperament (Fuscaldo, Bisol, & Lara, 2013Fuscaldo, L. V., Bisol, L., & Lara, D. R. (2013). How emotional traits and affective temperament relate to cocaine experimentation abuse and dependence in a large simple. Addictive Behaviors, 38, 1859-1864. doi:10.1016/j.addbeh.2012.11.009
https://doi.org/10.1016/j.addbeh.2012.11...
; Lara, Ottoni, Brusntein, Frozi, & Bisol, 2012Lara, D. R., Ottoni, G. L., Brusntein, M. G., Frozi, H. W. C., & Bisol, L. W. (2012). Development and validity of the Brazilian Internet Study on Temperament and Psychopathology (BRAINSTEP). Journal of Affective Disorders, 141(2-3), 390-398. doi:10.1016/j.jad.2012.03.011
https://doi.org/10.1016/j.jad.2012.03.01...
; Mochcovitch, Nardi, & Cardoso, 2012Mochcovitch, M. D., Nardi, A. E., & Cardoso, A. (2012). Temperament and character dimension and their relationship to major depression and panic disorder. Revista Brasileira de Psiquiatria, 34(3), 342-351. doi:10.1016/j.rbp.2012.03.002
https://doi.org/10.1016/j.rbp.2012.03.00...
; Tavares & Gentil, 2007Tavares, H., & Gentil, V. (2007). Psychological gambling an obsessive-compulsive disorders: Towards a spectrum of disorders of volition. Revista Brasileira de Psiquiatria, 29(2), 107-117.). However, in Brazil, most temperament tests still lack sufficient validity evidences and norms to be used with confidence (Guzzo, Riello, & Primi, 1996Guzzo, R. S. L., Riello, I. C., & Primi, R. (1996). Pavlovian Temperament Survey- PTS: Análise de ítens e teste de realidade. Psicologia Escolar e Educacional, 1, 53-59. doi:10.1590/S1413-85572003000200008
https://doi.org/10.1590/S1413-8557200300...
; Ito, Gobita, & Guzzo, 2007Ito, P. C., Gobitta, M., & Guzzo, R. S. L. (2007). Temperamento, neuroticismo e auto-estima: Um estudo preliminar. Estudos de Psicologia (Campinas), 24, 143-153. doi:10.1590/S0103-166X2007000200001
https://doi.org/10.1590/S0103-166X200700...
; Klein, Putnam, & Linhares, 2009Klein, V. C., Putnam, S. P., & Linhares, M. B. M. (2009). Assessment of temperament in children: Translations of instruments to Portuguese (Brazil) language. Interamerican Journal of Psychology, 43(3), 552-555.). For example, data from the Questionnaire for Types Assessment (QUATI; Zacharias, 2003 Zacharias, J. J. M. (2003). QUATI- Questionário de Avaliação Tipológica-Versão II (5. ed.). São Paulo, SP: Vetor.), designed to assess three types of temperament (extroversion-introversion, sensation-intuition, and thinking-feeling), display adequate test-retest reliability as well as concurrent validity evidence. However, the QUATI's factor structure has been questioned, given evidence that the test measures nine rather than three factors and that evidence for the sensation-intuition factor is limited (Moraes & Primi, 2002Moraes, I. F., & Primi, R. (2002). Escala de avaliação de tipos psicológicos: Validade e precisão. Psico-USF, 7(1), 25-34.). Thus, additional evidence as to the factor structure of temperament tests in Brazil is needed. The purpose of this research was to examine the factor structure of the Inventory of Adult Temperament Styles (IATS). This research also investigates possible gender differences in temperament styles among Brazilians, given pervasive international research showing such differences.

Method

Participants

Data were collected on 853 middle class adults (43% female), ages 15 through 54 (M = 26.5, SD = 8.6), who attended universities or worked in various professions in Brazil's state of Sao Paulo. These persons were contacted by their professors or employees and invited to participate in the study.

Instrument

The theoretical foundation for the Inventory of Adult Temperament Styles (IATS) is based on prevailing temperament models (e.g. Myers et al., 1998Myers, I. B., & Myers, P. B. (1980). Gifts differing. Palo Alto, CA: Consulting Psychologists Press.; Oakland et al., 1996Oakland, T., Glutting, J. J., & Horton, C. B. (1996). Student Styles Questionnaire. San Antonio, TX: Psychological Corporation.), that utilize four bipolar temperament styles: extroversion-introversion, practical-imaginative, thinking-feeling, and organized-flexible. One hundred items forced-choice items were created to be consistent with this model. Each item has two opposing options.

Procedure

Approval by the Brazilian Ethics Research Committee was secured (N.277/07). The IATS was group administered to college and professionals at university or work settings. Raw scores were used for data analysis in order to preserve statistical properties of the observed score distribution. The fit of items with their respective temperament styles was evaluated using the two parameter logistic model from item response theory (IRT). This model was utilized because the magnitude of relationships between items and temperament styles was presumed to vary. A three parameter model was not utilized because the guessing parameter is not of interest when examining dichotomous temperament items. Separate analyses were performed for the extroversion-introversion, practical-imaginative, thinking-feeling, and organized-flexible styles, to verify the proposed four-factor model.

IRT analyses were conducted using the Xcalibre 4.1 computer program (Guyer & Thompson, 2012Guyer, R., & Thompson, N. A. (2012). User's manual for Xcalibre item response theory calibration software, version 4.1.7. St. Paul, MN: Assessment Systems Corporation.) following the maximum likelihood estimation approach. Items were removed if they demonstrated either negative point bi-serial correlations or poor fit with their respective temperament dimension. Items were considered to display acceptable fit if the z residual fit statistic did not exceed the two-tailed critical alpha value of .01.

The next stage of data analysis involved the use of item parceling methods. Item parceling involves combining items into groups (Gorsuch, 1983Gorsuch, R. L. (1983). Factor analysis. Hillsdale, NJ: Lawrence Erlbaum.). Item parceling was warranted because the variance of individual items was restricted due to their dichotomous format. Moreover, parceling yields aggregated scores that have greater variability than scores obtained from individual items. Three parcels of approximately equal size were constructed for each dimension of the four bipolar temperament styles, as the use of three parcels per dimension produces a just-identified construct that ". . . has only one unique solution that optimally captures the relations among the items" (Little, Cunningham, Shahar, & Widaman, 2002, p. 162Little, T. D., Cunningham, W. A., Shahar, G., & Widaman, K. F. (2002). To parcel or not to parcel: Exploring the question, weighing the merits. Structural Equation Modeling, 9(2), 151-173. doi:10.1207/S15328007SEM0902_1
https://doi.org/10.1207/S15328007SEM0902...
).

Confirmatory factor analysis (CFA) was used to exam correspondence of the remaining 79 items to a four factor structure, with each factor representing one bipolar temperament style. The factor loadings of parcels on their respective temperament styles were freely estimated. Additionally, measurement errors and correlations among the styles were freely estimated. CFA was used to test the extent to which the hypothesized model presented in Figure 1 fits data obtained from the total sample as well as data from disaggregated male and female samples. Next, parcel invariance was examined across men and women to determine if the data demonstrate configural invariance (i.e., whether the measured variables define the same factors and have the same pattern of loadings across males and women) and metric invariance (i.e., whether the magnitude of observed variables' factor loadings are invariant across men and women).

Figure 1
Measurement model for the Inventory of Adult Temperament Styles.

CFA analyses were performed using Amos 16.0 (Arbuckle, 2007Arbuckle, J. L. (2007). Amos 16.0 [Computer software] . Chicago, IL: Smallwaters. ) computer software following the method of maximum-likelihood estimation. Multiple fit indices were used to judge model fit. Multiple index presentation strategies help control the error rate for accepting misspecified models (Hu & Bentler, 1999Hu, L., & Bentler, P. M. (1999). Cutoff criteria for fit indexes in covariance structural analysis: Conventional criteria versus new alternatives. Structural Equation Modeling, 6, 1-55. doi:10.1080/10705519909540118
https://doi.org/10.1080/1070551990954011...
). The indices utilized in this study include the comparative fit index (CFI), root mean square error of approximation (RMSEA), standardized root mean square residual (SRMR), and change in chi-square value (∆χ2). The successive models used to test invariance are nested. Thus, a likelihood ratio test (∆χ2) was used to determine if adding theoretically substantive constraints result in a large and statistically significant drop in χ2 values (Keith, 2005Keith, T. Z. (2005). Using confirmatory factor analysis to aid in understanding the constructs measured by intelligence tests. In D. P. Flanagan & P. L. Harrison (Eds.), Contemporary intellectual assessment: Theories, tests, and issues (2nd ed., pp. 581-614). New York: Guilford Press. ). Additionally, change in CFI and RMSEA values was examined when evaluating invariance. CFI changes of .01 or less and RMSEA changes of .015 or less were used as criteria for establishing invariance.

Results

Seventy-nine items were acceptable based on fit with the two parameter logistic model from IRT. Twenty-one items were removed because they demonstrated either negative point bi-serial correlations or poor fit with their respective temperament dimension. Twenty-one items assess extroversion-introversion, 19 assess organized-flexible, 18 assess practical-imaginative, and 21 assess thinking-feeling styles.

All scales (i.e., dimensions) had reasonable a parameter estimates. The typical range for estimates is .30 to 1.50 (Guyer & Thompson, 2012Guyer, R., & Thompson, N. A. (2012). User's manual for Xcalibre item response theory calibration software, version 4.1.7. St. Paul, MN: Assessment Systems Corporation.), and estimates for all retained items either fell within or approximated this range. The range and average of a parameter estimates within each dimension are as follows: .22 to 1.16 with a mean of .58 for extroversion-introversion, .32 to 1.16 with a mean of .64 for organized-flexible, .17 to 1.16 with a mean of .53 for practical-imaginative, and .17 to 1.16 with a mean of .53 for thinking-feeling. Results suggest that items within each dimension have discriminative value when assessing individual differences in temperament styles.

All estimates for the b parameter fall within the typical range of -3 to 3 (Guyer & ThompsonGuyer, R., & Thompson, N. A. (2012). User's manual for Xcalibre item response theory calibration software, version 4.1.7. St. Paul, MN: Assessment Systems Corporation.). The b parameter is related to item means and reflects the probability of endorsing a response indicative of a particular temperament style. The range and average of b parameter estimates within each dimension are as follows: -2.45 to 1.42 with a mean of -.80 for extroversion-introversion, -1.71 to 2.52 with a mean of -.43 for organized-flexible, -2.14 to 2.52 with a mean of -.17 for practical-imaginative, and -2.87 to 2.21with a mean of -.24 for thinking-feeling.

Individual items were selected from item pools for each style and assigned randomly to one of three parcels in to reduce unwanted sources of variance and parameter bias when examining model fit (Little et al., 2002Little, T. D., Cunningham, W. A., Shahar, G., & Widaman, K. F. (2002). To parcel or not to parcel: Exploring the question, weighing the merits. Structural Equation Modeling, 9(2), 151-173. doi:10.1207/S15328007SEM0902_1
https://doi.org/10.1207/S15328007SEM0902...
). Parcel data are reported in Table 2. Global fit statistics, which reflect the fit of the CFA model presented in Figure 1 to the observed data, are presented in Table 3. Model parameter estimates, including standardized regression weights for parcels and correlations among latent temperament styles, are presented in Tables 2 and 4, respectively. Although fit statistics generally indicate reasonable fit between the hypothesized model and the observed data, the CFI value observed for women falls below .95. All parcels load moderately well on their respective factors. Correlations among latent factors generally are small. However, organized-flexible styles correlate moderately with practical-imaginative and thinking-feeling styles. Moreover, among women, extroversion-introversion and practical-imaginative styles correlate moderately

Table 2
Descriptions of Parcels and Loadings of Parcels on Associated Styles

Table 3
Global Model Fit for Female, Male, and Total Samples
Table 4
Correlations among Latent Styles of Temperament

Results from tests of measurement invariance are presented in Table 5. Configural and metric invariance are supported for men and women. An invariant structural configuration indicates that items measure the same constructs in both groups. Metric invariance indicates that factors are calibrated in a similar way and thus have similar meanings for men and women (Steinmetz, 2011Steinmetz, H. (2011). Analyzing observed composite differences across groups: Is partial measurement invariance enough? Methodology: European Journal of Research Methods for the Behavioral and Social Sciences, 1-12. Advance online publication. doi:10.1027/1614-2241/a000049
https://doi.org/10.1027/1614-2241/a00004...
).

Table 5
Summary of Results for Measurement Invariance Testing Across Gender Groups

Discussion

Assessment of temperament styles provides important information that can be used to better understand people's predisposition to display certain behaviors and help them to achieve life pursuits. Although scholarly literature on temperament exists in Brazil (Guzzo et al., 1996Guzzo, R. S. L., Riello, I. C., & Primi, R. (1996). Pavlovian Temperament Survey- PTS: Análise de ítens e teste de realidade. Psicologia Escolar e Educacional, 1, 53-59. doi:10.1590/S1413-85572003000200008
https://doi.org/10.1590/S1413-8557200300...
; Klein et al., 2009Klein, V. C., Putnam, S. P., & Linhares, M. B. M. (2009). Assessment of temperament in children: Translations of instruments to Portuguese (Brazil) language. Interamerican Journal of Psychology, 43(3), 552-555.), its focus largely has been on child rearing practices (Malhado & Alvarenga, 2012Malhado, S. C. B., & Alvarenga, P. (2012). Relações entre o temperamento infantil aos oito meses e as práticas educativas maternas aos 18 meses de vida. Estudos de Psicologia (Campinas), 29(Supl. 1), 787-797. doi:10.1590/S0103-166X2012000500015
https://doi.org/10.1590/S0103-166X201200...
; Melchiori et al., 2007Melchiori, L., Alves, Z. M. M. B., Souza, D. C., & Bugliani, M. A. P. (2007). Família e creche: Crenças a respeito de temperamento e desempenho de bebês. Psicologia, Teoria e Pesquisa, 23(3), 245-252. doi:doi.org/10.1590/S1413-35552011005000015
https://doi.org/10.1590/S1413-3555201100...
) and use in clinical setting (Lara, Ottoni, et al., 2012Lara, D. R., Ottoni, G. L., Brusntein, M. G., Frozi, H. W. C., & Bisol, L. W. (2012). Development and validity of the Brazilian Internet Study on Temperament and Psychopathology (BRAINSTEP). Journal of Affective Disorders, 141(2-3), 390-398. doi:10.1016/j.jad.2012.03.011
https://doi.org/10.1016/j.jad.2012.03.01...
, Mochcovitch et al., 2012Mochcovitch, M. D., Nardi, A. E., & Cardoso, A. (2012). Temperament and character dimension and their relationship to major depression and panic disorder. Revista Brasileira de Psiquiatria, 34(3), 342-351. doi:10.1016/j.rbp.2012.03.002
https://doi.org/10.1016/j.rbp.2012.03.00...
). Its limited focus precludes the use of temperament assessment for other purposes such as vocational guidance or personnel assessment. Therefore, this research examined the factor structure of the Inventory of Adult Temperament Styles (IATS) together with possible gender differences on thinking-feeling styles among Brazilians.

Results indicate that the fit between the hypothesized model and the observed data generally is adequate, thus confirming a four factor structure of temperament (extroversion-introversion, practical-imaginative, thinking-feeling, and organized-flexible styles). These findings are congruent with international research with this temperament model as reported by others (e.g., Benson, et al., 2009Benson, N., Oakland, T., & Shermis, N. (2009). Cross-national invariance of children's temperament. Journal of Psychoeducational Assessment, 27(1), 3-16. doi:10.1177/0734282908318563
https://doi.org/10.1177/0734282908318563...
; Callueng & Oakland, 2014Callueng, C., & Oakland, T. (2014). If you don't know the child's temperament you don't know the child. Estudos de Psicologia (Campinas), 31, 3-13. doi:10.1590/0103-166X2014000100001
https://doi.org/10.1590/0103-166X2014000...
; Myers & Myers, 1980Myers, I. B., & Myers, P. B. (1980). Gifts differing. Palo Alto, CA: Consulting Psychologists Press.; Rowinski et al., 2013Rowinski, T., Cieciuch, J., & Oakland, T. (2013). The factorial structure of four temperament styles and measuring invariance across gender and age groups. Journal of Psychoeducational Assessment, 32(1), 77-82. doi:10.1177/0734282913487045
https://doi.org/10.1177/0734282913487045...
) and add evidence as to the validity of the IATS's internal structure.

Small to moderate correlations among some temperament styles were found, with organized-flexible and practical-imaginative styles sharing approximately 17% common variance. Thus, the temperament qualities measured by these two styles are not unique to them and instead share a more general temperament quality - albeit modestly. Other attempts to develop items that measure only a pure, single and unique temperament style have not been successful (Benson et al., 2009Benson, N., Oakland, T., & Shermis, N. (2009). Cross-national invariance of children's temperament. Journal of Psychoeducational Assessment, 27(1), 3-16. doi:10.1177/0734282908318563
https://doi.org/10.1177/0734282908318563...
; Myers & Myers, 1980Myers, I. B., & Myers, P. B. (1980). Gifts differing. Palo Alto, CA: Consulting Psychologists Press.; Oakland et al., 1996Oakland, T., Glutting, J. J., & Horton, C. B. (1996). Student Styles Questionnaire. San Antonio, TX: Psychological Corporation.).

This research also examined investigated possible gender differences in temperament styles among Bra-zilians, given pervasive international research showing such differences. Invariance testing suggests that scores reflecting temperament styles have similar meanings for men and women. In general, international research suggests that men are more likely to prefer a thinking style while women are more likely to prefer a feeling style (Callueng & Oakland, 2014Callueng, C., & Oakland, T. (2014). If you don't know the child's temperament you don't know the child. Estudos de Psicologia (Campinas), 31, 3-13. doi:10.1590/0103-166X2014000100001
https://doi.org/10.1590/0103-166X2014000...
; Francis, 2006Francis, L. (2006). Psychological types of female trainee primary school teachers in Wales. Journal of Psychological Type, 2, 9-19. ; Joyce, 2010Joyce, D. (2010). Essentials of temperament assessment. New York: Wiley.; Myers et al., 1998Myers, I. B., McCaulley, M. H., Quenk, N. L., & Hammer, A. L. (1998). MBTI: Manual: A guide to the development and use of the Myers-Briggs type indicator. Palo Alto, CA: Consulting Psychologists Press.). This finding is consistent with previous Brazilian data related to gender and creative styles (Wechsler, 2009Wechsler, S. M. (2009). Age and gender impact on thinking and creating styles. European Journal of Education and Psychology, 2(1), 37-48.), thus confirming that, in western societies, women display a greater need for attachment (Else-Quest et al., 2006Else-Quest, N. M., Hyde, J. S., Goldsmith, H. H., & Van Hulle, C. A. (2006). Gender differences in temperament: A meta-analysis. Psychological Bulletin, 132, 33-72. doi:10.1037/0033-2909.132.1.33
https://doi.org/10.1037/0033-2909.132.1....
). Thus, differences in women's temperament styles might be reflecting their clear tendency to look for harmony, to value sentiments over logic and their tendency to be more sympathetic and friendly in their interactions than men.

Limitations and Directions for Future Research

Although results confirm the IATS' theoretical structure, evidence regarding the reliability of scores derived from the IATS is needed. Moreover, external validity evidence regarding the relations of IATS scores with other measures of temperament, as well as relations with other constructs, is necessary. Evidence regarding the utility of IATS scores for applied purposes such as career counseling, organizational development, or treatment planning would be beneficial so that test users can make informed decisions regarding the consequences of test use. Finally, evidence regarding differences on the frequency of temperament styles in the Brazilian population is needed given the present lack of appropriate tests for measuring Brazilian's temperament styles.

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Publication Dates

  • Publication in this collection
    Oct-Dec 2014

History

  • Received
    09 Oct 2013
  • Accepted
    31 Oct 2013
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