Answer:
Factor analysis
Step-by-step explanation:
Factor Analysis is the methodology used by psychologists for the assessment of the cluster of characteristic for a particular trait like ambition, etc.
Factor analysis is used for the reduction or grouping of a large number of variable factors into fewer number.
This methodology is used for the extraction of maximum common variance out of all the variable factors and group them into a common cluster which can be used as an index for all the variable factors for future analysis.