What "third variable" often determines the nature and strength of the relation between frustration and aggression?

Ax and Erin drew a slightly different picture of stick figures on each of 50 two by four inch pages in a notepad

MWhen they rapidly flipped through them, _____ made it look like the stick figures themselves were moving. a) motion parallax b) relative size c) autokinetic illusion d) retinal disparity

From eight weeks after conception until birth, a developing child is known as a(n)

a. neonate. c. baby. b. infant. d. fetus.