IPLC - Personality Inventory Le Corff
Yann Le Corff, Ph.D., c.o.

The personality inventory Le Corff is a new tool designed to measure the personality traits of the five-factor theory (“the Big Five”).

This theory, which has been extensively validated and which is the subject of a broad consensus in the psychologic research community, highlights the expression of 5 exhaustive dimensions that summarize the personality. These five personality traits are the relational, emotional, cognitive, motivational, attitudinal and experiential styles of a person.

The reports are easy to read and understand.

A quick look at the five dimension.

5 scales: Openness, Conscientiousness, Extraversion, Agreeableness and Emotional Stability.

The 10 facets subscales:
Openness to experience: Intellect, artistic personality. Conscientiousness: Seeking success, Reliability and Organization. Extraversion: Assertiveness, Sociability and positive emotions. Agreeableness: prosocial orientation, Compliance and modesty. Neuroticsm: emotional control and confidence.

The IPLC provides a second level analysis by subdividing each of the five traits in two specific aspects that allow a more detailed analysis of personality.

The inventory consists of 105 items requiring an equivalent reading level of a high schooler. The IPLC’s items were developed into a tool for problems that may occur in business situations, and to cover the scope of vocational guidance. This is a particularly useful tool for recruitment, and career counseling.

Test development.

In psychology, there is a variety of theories that can conceptualize personality (Cervone and Pervin, 2008). Among them is the trait theorym which has been the subject of major advancements in the last two decades (Morizot and Miranda, 2007). According to this conceptualization, personality is composed of traits that are universal in humans, and on which individuals vary, meaning that we all possess equal bipolar traits on which we differ quantitatively. For example, everyone has some level of extraversion, whether it is high or low (introversion), but it is impossible to not qualify a person of this characteristic. The traits reflect the cognitive, emotional, relational, experiential, motivational and attitudinal styles relatively steady over time and through different situations, which will distinguish individuals from each other. The IPLC was built on this basis and provides a valid and reliable measure of these characteristics.

Quebec and Canada (in development) Accompanying material Professional manual & computerized interpretation Report Available in French and English

IPLC and Social Desirability
During the development of the IPLC, a group of people completed the IPLC and a short version of the Marlowe-Crowne Social Desirability Scale. Significant correlations were observed between the scale of social desirability and the traits Neuroticism (r = 0.41; p <0.01), Agreeableness (r = 0.35; p <0.01), and Conscientiousness (r = 0.32; p <0.01), which is in line with the results of the meta-analysis by Ones and al. (1996), and the assumption that people with a more «positive» personality profile would get higher results with social desirability scales (McCrae and Costa, 2010). Thus, the scales on social desirability do not indicate the tendency of one’s misinterpretation of their own personality or to answer in order to be perceived in a favorable light. They rather indicate, the tendency to adopt a pro-social behavior, and to act in conformity with social norms (Borkenau and Zaltauskas, 2009).


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20 minutes

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15 years and older

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Personnality theory of five factors ( «Big Five»)

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Individual or in Group