By pairing the ringing of a bell with the presentation of meat, Pavlov trained dogs to salivate to the sound of a bell even when no meat was presented. In this experiment, the presentation of the meat was the:

In conservation problems, preschoolers make mistakes because they ignore the transformations that have taken place and focus on ______

Fill in the blank with correct word

In Harlow's studies with young monkeys, the monkeys were exposed to a wire mother with a bottle and a cloth mother without a bottle. The young monkeys spent their non-feeding time:

A) with the wire mother. B) with both mothers equally. C) with the cloth mother. D) away from both mothers.