____ is a pattern of sleeping far longer on weekends and holidays than on school or work days, which leads to poor academic and job performance

The New York Longitudinal Study identified types of temperament, and they are called

a. 4; secure, insecure-avoidant, disorganized, and insecure-resistant b. 3; easy, difficult, and slow-to-warm-up c. 3; Types A, B, and C d. 3; permissive, authoritarian, and authoritative e. 2; assimilating and accommodating

Of all motor skills, __________ may play the greatest role in infant cognitive development

A) rolling over B) reaching C) crawling D) walking