Purpose of the Scales

The primary aim of the Scales for the Assessment of Feigning [ΚΕΠ-40] is to evaluate and quantify the two main types of socially desirable behavior: Self-Deception and Impression Management.

Scale Analysis

The Scales for the Assessment of Feigning [ΚΕΠ-40] are designed to assess social behaviors that individuals prefer to display in specific situations. At the same time, they evaluate elements of personality as expressed through self-reports. Therefore, this assessment tool has been effectively utilized for various purposes, including clinical evaluation of personality traits, development of psychometric tools, and their validation.
It is frequently applied in conjunction with other tests to detect potential distortion or faking of responses. The [ΚΕΠ-40] includes 40 items, assessing the two core forms of preferred behavior. It is particularly suitable for individuals over the age of 16 and requires a reading level of Grade D or E. Completion typically takes 5 to 7 minutes, and the tool is recommended for both clinical and non-clinical research.

Scale Scoring

Each item is rated on a five-point Likert scale, where 1 means “not true at all” and 5 means “completely true.” The total score is calculated by summing only the “extreme” values, which are then transformed into T-scores.

Validity and Reliability

Regarding the validity and reliability of the Scales for the Assessment of Feigning [ΚΕΠ-40], results from the Greek version indicate that both are at satisfactory levels. The internal consistency index (Cronbach’s α) showed very good reliability, with a value of 0.85.

References

Rogoza, R., Wyszyńska, P., Maćkiewicz, M., & Cieciuch, J. (2016). Differentiation of the two narcissistic faces in their relations to personality traits and basic values. Personality and Individual Differences, 95, 85–88.
Paulhus, D. L. (2018). The Big Two dimensions of desirability. In Agency and communion in social psychology (pp. 79–89). Routledge.
Freeman, J., & Samson, F. (2012). Are you telling the truth? Psychopathy assessment and impression management in a community sample. The Open Criminology Journal, 5(1).