Harold is an adaptable child who is quiet, calm, good-natured, and gets along well in school. Thomas & Chess would say his temperament is ______

Regularly eating __________ high in polyunsaturated fatty acids offers some protection against mental disabilities

A) vegetables B) fruit C) fish D) beef

A 3 ×3 between-subjects factorial design with ten scores per cell requires _____

participants. a. 90 b. 30 c. 60 d. 10