What do we know about Cattell? Raymond Cattell Cattell was born in Stanford in the year 1905), an American psychologist of British origin, interested in his theory in the study of standard or personality traits, which had a prominent influence in his theory, and he is famous for his discovery of many areas related to the science of The psyche, Cattell was interested in these measurements, which was the reason that Raymond believed that intelligence was inherited because his mother was intelligent and his father was less intelligent, Cattell died on February 2, 1998 AD.

Cattell's personality theory: He believes that personality is a pattern of traits that leads to understanding and realizing personality and predicting its behavior. A person has the ability to collect information and data he wants, then choose a group from them through the filtering process and then test those hypotheses through appropriate statistical tests. He follows the induction approach. And inference is the transition from the part to the whole and vice versa.

Dimensions (many traits) of personality: source traits, each of us has source traits, but differ in extent and destiny such as intelligence, and they are aggregates of diverse behaviors.
Source traits: through which the reasons for the behavior issued by the individual become clear.
Unique Traits: They are people who have special abilities that distinguish them from others.
Dynamic features: that show a person's interests and inclinations.

There are also characteristics that indicate a person's ability and mood traits indicative of how a person behaves while doing something to achieve his goal. Cattell identified twelve new traits by which to measure abnormal behaviors or pathological traits, including states of happiness and energy, constitutional and environmental traits, cheerfulness and vitality, Psychopathic deviations.

The pluses: Provided tremendous developments related to the study of personalities, characteristics and human traits, the human personality is a complex and changing personality, but those factors and measurements that Cattell used are useful in measuring different dimensions, giving way to leaders in matters related to the types of characteristics that should be improved further.

Disadvantages: Surveys do not explain how it affects human individuality in his theory by relying only on personality measures used, theory may become less specific with each new suggestion regarding traits suggested by the authors.