The research by Margaret and Harry Harlow demonstrated a need for ________ in young rhesus monkeys

Jose is 10 months old. His mother enrolled him in day care now that she is returning to work full-time. On his first morning at the day care center, he cries when his mother leaves. Jose is showing

A) insecure attachment. B) contact comfort. C) separation anxiety. D) orientation without discrimination.

__________ studies differ from correlational research only in that groups of participants are carefully chosen to ensure that their characteristics are as much alike as possible

A) Field experiment B) Natural, or quasi-, experiment C) Laboratory experiment D) Observational