The attachment theory of love emphasizes that people acquire their attachment styles of love, in large part, from how their parents cared for them

Harrison has started pinching his sister. He does this not because it will hurt her, but because he loves to see her large reaction when she gets pinched

Although he does not understand that this hurts her and is mean, he does understand that the reaction he gets from her is interesting and funny, so he keeps repeating it. According to Piaget, what age would Harrison start performing tertiary circular reactions such as this? a. 6-12 months b. 12-18 months c. 18-24 months d. 24-30 months

In contrast to concrete operational thinkers, formal operational thinkers

a. can reach counterfactual conclusions. c. do not confuse appearances with reality. b. can use mental operations. d. are not centered in their thinking.