Which period begins three weeks after conception?

The term "change blindness" refers to the observation that

a. people with poor eyesight tend not to notice that a visual object is rotating. b. people often fail to see that an object in a scene has changed. c. people often fail to notice that a new object has suddenly appeared in a scene. d. infants are not able to create a gestalt in a subjective-contour figure.

Which of the following best illustrates the idiographic approach to personality research?

A) identifying personality characteristics which are shared by large groups of people B) designing tests which characterize abnormal personality types C) performing a detailed study of the world's most successful business person D) using factor analysis to identify personality traits