A psychologist shows a child two glasses of water, equally full and of the same shape and size. Then she pours the water from one of the glasses into a taller, thinner glass and asks "Now which glass has more water?" The psychologist is apparently testing the child's concept of

A) object permanence.
B) conservation.
C) episodic memory.
D) paired-associates learning.

Conservation

Refers to the cognitive understanding that certain properties of objects, such as volume or mass, remain unchanged even when their forms or appearances change.

Object Permanence

The concept that entities remain present even when they are not observable, audible, or detectable by any sensory means.

Paired-Associates Learning

A learning process where items to be learned are presented in pairs so that when one item of a pair is presented, the other is recalled.