In her third trimester, Alicia's doctor informed her that the placenta was covering the cervical opening. Alicia's condition is known as

According to the introduction of Chapter 4, one important function of working memory is

a. to provide a template that makes it easier to recognize objects. b. to store knowledge about a wide variety of topics. c. to provide a large storage space for all your current sights, sounds and other perceptual experiences. d. to coordinate your current mental activities

What new capability characterizes the formal operations stage?

a) object permanence b) conservation c) reversibility d) ability to address hypothetical propositions