Description of the Questionnaire

The Thurstone Temperament Schedule (TTS) is one of the first standardized personality assessment tools, developed by Louis Thurstone and Thelma Gwinn Thurstone. Its purpose is to measure temperament traits, which are stable and fundamental aspects of personality that influence behavior in social and professional contexts. The questionnaire consists of 100 statements, to which participants respond with “True” or “False.” The statements cover various personality dimensions, such as emotional stability, sociability, self-confidence, dominance, and impulsiveness.

Purpose

The aim of the questionnaire is to understand an individual’s personality by recording key temperament traits. It is used to predict behavior in professional, counseling, and social settings, and supports personnel selection, career guidance, and psychological evaluation.

Data Analysis and Use

Responses are numerically coded and grouped into specific indicators reflecting thematic dimensions of personality. Data analysis involves statistical processing such as calculation of means, standard deviations, and reliability indices (e.g., Cronbach’s alpha). In addition, results can be correlated with demographic variables or other factors, allowing comparisons between groups or the exploration of relationships with professional performance, satisfaction, or other psychological variables.

Calibration

Scoring is based on standardized norms created from representative population samples. Each subscale yields a score that is interpreted as low, average, or high, indicating the absence, typical presence, or strong expression of a particular trait. The tool’s reliability has been confirmed through test-retest methods and internal consistency, while its validity has been assessed through correlations with other personality instruments and observed behaviors.

References

Thurstone, L. L., & Thurstone, T. G. (1930). Thurstone Temperament Schedule. Chicago: Science Research Associates.
Guilford, J. P. (1959). Personality. McGraw-Hill.
Anastasi, A., & Urbina, S. (1997). Psychological Testing (7th ed.). Prentice Hall.
Botsaris, G. (2005). Psychometric Personality Tools in Greece. Hellenic Letters Publishing.
Mpampiniotis, G. (2012). Psychology of Personality. Athens: Gutenberg.