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​Leonard is changing his four-month-old son’s diaper, and afterwards he gets him into his pajamas. While easing the little guy’s foot into the sleeper, he inadvertently strokes the boy’s foot and is surprised to see the toes immediately fan out. He does it again to the other foot, and gets the same response. Leonard has accidently stumbled upon his son’s ____ reflex.

​How does temperament contribute to attachment?

​The newborn is to sleeping ____ hours at a time as the six-month old is to sleeping ____ hours at night.

​Laurentis is a three-month-old child who enjoys sucking on his thumb. According to Piaget, he probably first developed this enjoyment as a result of a(n)

​The farther a correlation coefficient is from zero, the weaker the relationship between the two variables in question.

​About 10% to 15% of new mother experience the “baby blues,” which is a very serious psychological condition that can lead to problems for the child.

​When looking through a microscope at an entire set of human male chromosomes, how would you be able to differentiate an autosome pair from a sex chromosome pair?

One way that infants can pick words out of spoken language is the stress, or emphasis, that is placed on certain words.

Some researchers have suggested that a phenomenon called “mindblindness” underlies the autism spectrum disorders.

​Gracie helps her mother set the table for dinner without being asked. She lays out napkins and silverware, places the plates in their correct spots, and puts ice in all of the glasses. When her mother realizes that she has done this, she gives Gracie a big hug, thanks her repeatedly, and later gives her a little extra dessert as a treat. In learning theory, we would say that Gracie’s behavior has been: