In a Study of Personality and Problem Solving, a Personality

In a study of personality and problem solving, a personality psychologist monitors the number of suggestions made by shy and non-shy individuals in same-sex dyads while they work on puzzles involving making a pyramid out of blocks during a 10-minute session in one of the Psychology Department's laboratory rooms containing both computerized video- and sound-recording equipment. This is an example of research using _______.

A) Fixed role playing
B) Behavioral analysis
C) Controlled observations
D) Convert observations
E) Social formatting