Monozygotic twins have 100% genetic overlap, while dizygotic twins carry only 50% genetic overlap.

Two-month-old Gustavaccidentally made a smacking sound after feeding. Then he tried to repeat it many times. Based on this activity, Gustavhas attained Substage ________ of Piaget’s sensorimotor substages

A) 1—reflexive schemes B) 2—primary circular reactions C) 3—secondary circular reactions D) 4—coordination of secondary circular reactions

A theorist with a(n) _____ perspective would be most likely to focus on the interaction between a changing environmental context and a person who is producing changes in the environment.

A. psychoanalytic B. systems C. discontinuity D. operant conditioning