A 21-year-old male has just been diagnosed with cancer of the reproductive organs. Given his age, which of these cancers is more likely?

With psychological disorders, the diagnosis given is primarily based on

a. the therapist's theoretical perspective b. communication across clinicians c. a cluster of symptoms d. findings of laboratory tests

Studies by Shiner, Thomas, and Chess indicate that newborn infants differ in activity, irritability, and other aspects of

a. intelligence. b. physical development. c. temperament. d. aggressiveness.