Piaget used __________ experiments to see whether children realized that characteristics of objects remained the same despite changes in physical appearance

Historically, which one of the following was a belief about handedness?

a. Having equal dominance or being ambidextrous was preferred. b. Being left handed had superstitious notions attached to it. c. Right handed people were thought to be of higher IQ. d. Left handed people were thought to have unique and unusual gifts.

Which of the following is NOT a characteristic of single-case experimental designs?

a. the use of a within-subjects design b. studying one or only a few sampling units c. the manipulation of the independent variable d. the random assignment of sampling units to treatment conditions