The role of self-concept in the context of the way in which work teams function has not been clearly identified, demonstrating the importance of studying this phenomenon. The objective was to evaluate the explanatory power of professional self-concept and personal beliefs in relation to affective commitment. The study was performed with data from 405 Brazilian employees, using a questionnaire with satisfactory reliability indices (α between .75 and .91). The results showed a significant influence of self-concept and personal beliefs in the prediction of commitment (R² = .20). Thus, the vision that workers have of themselves and their beliefs about team work are important predictors of the bonds that they develop with their teams.

El papel del autoconcepto en relación con el funcionamiento de los equipos aún no ha sido claramente identificado, hecho que demuestra la importancia de avanzar en el estudio de ese fenómeno. El objetivo de esta investigación fue identificar el poder de predicción del auto concepto profesional y las creencias personales, en relación al compromiso afectivo. El estudio fue realizado con datos recogidos de 405 empleados brasileños, mediante un cuestionario con índices de confiabilidad satisfactorios (α entre .75 y .91). Los resultados revelan la influencia significativa del auto concepto y las creencias personales en la predicción del compromiso (R² =.20). De ese modo, la visión que los trabajadores tienen de sí mismos y sus creencias sobre el trabajo en equipos son importantes elementos de explicación de los vínculos que desarrollan con sus equipos.

The role of self-concept in the context of the way in which work teams function has not been clearly identified, demonstrating the importance of studying this phenomenon. The objective was to evaluate the explanatory power of professional self-concept and personal beliefs in relation to affective commitment. The study was performed with data from 405 Brazilian employees, using a questionnaire with satisfactory reliability indices (? between .75 and .91). The results showed a significant influence of self-concept and personal beliefs in the prediction of commitment (R² = .20). Thus, the vision that workers have of themselves and their beliefs about team work are important predictors of the bonds that they develop with their teams.