Raymond Cattell (1905-1998) broke personality traits into 16 categories using a statistical measure known as factor analysis to calculate the relationships among traits. Cattell hoped to determine how each trait influenced other traits in the same individual. For each of the 16 categories, Cattell measured a high end and a low end along a spectrum. For example, you might measure high on the cheerful - serious spectrum and low on the practical - imaginative spectrum.

1. K.THIYAGU,
Assistant Professor,
Department of Education,
Central University of Kerala, Kasaragod
Cattell's 16PF Trait Theory

2. Born 20 March 1905
Hill Top, near Birmingham, England
Died 2 February 1998 (aged 92)
Honolulu, Hawaii, United States
Nationality British and American
Alma mater King's College London
Known for 16 Personality Factors,
Fluid and crystallized intelligence,
Culture Fair Intelligence Test
Scientific career
Fields Psychology
Institutions University of Illinois
Doctoral advisor Francis Aveling, King's College London
Raymond Cattell

3. Cattell / 16 PF Theory
Trait theorist Raymond Cattell reduced the number of main personality traits from Allport’s
initial list of over 4,500 down to 16 by means of a statistical technique called factor analysis.

4. L - Data
Q -
Data
T -
Data
Cattell collected data from a range of people
through three different sources of data.
• L-data - this is life record data such as school grades, absence from work, etc.
• Q-data - this was a questionnaire designed to rate an individual's personality (known as the 16PF) .
• T-data - this is data from objective tests designed to 'tap' into a personality construct.

8. Traffic Police

9. Traffic Police

11. Common Unique
Source Surface
Traits
Four types of traits

12. Common
Traits
• Found widely distributed
in general population
• Honesty
• Aggression
• Co-operation

13. Unique Traits
• Are unique to a person
• Temperamental traits
• Emotional reactions

14. Surface traits
• Surface traits are very obvious and can be
easily identified by other people
• Recognized by manifestation of behaviour
• Curiosity
• Dependability
• Tactfulness

15. Source Traits
• source traits are less visible to
other people and appear to
underlie several different aspects
of behavior.
• Are underlying sources that
determine behaviour
• Dominance
• Emotionality
Attitude Change

16. High School Personality Questionnaire (HSPQ)
Adolescent Personality Questionnaire (APQ)
{ages 12 to 18 years}
Children's Personality Questionnaire (CPQ),
Early School Personality Questionnaire (ESPQ),
Preschool Personality Questionnaire (PSPQ).
16PF – parallel personality questionnaires

17. Thank You