The t-distribution is similar to the Z-distribution; however, it differs depending on:

Stereograms produce the perception of a 3-dimensional object because

a. of the convergence of the eyes. b. each eye receives a slightly different image of the visual scene. c. objects are interposed. d. they enhance linear perspective. e. the visual fields converge.

The __________ period of cognitive development is marked by rapid development of

language usage and of the ability to represent objects symbolically. a. sensorimotor b. preoperational c. concrete operational d. formal operational e. cognitive