Why were pioneers in the study of personality traits limited in what they could discover?

A) There were not as many sophisticated statistical tests in those days.
B) They had to calculate the factor analyses by hand.
C) Their data sets were limited.
D) These are all correct answers.

Personality Traits

Enduring characteristics that describe an individual's behavior, mindset, and emotional patterns.

Factor Analyses

A statistical method used to identify underlying variables, or factors, that explain the pattern of correlations among multiple observed variables.

Statistical Tests

Formal methods of making a decision or reaching a conclusion based on data analysis.