Although their pronunciation of words is not as precise as it will become later, at what age can most toddlers speak clearly enough to make themselves understood about nearly anything they wish?

A friend has just told you his cell phone number, and you repeat it to yourself several times as you search for a pen to record it. The technique you are using to remember the number is called

a. rehearsal. b. the serial position effect. c. release from proactive interference. d. the working-memory approach.

Two months ago, Jack moved and he had difficulty remembering his new telephone number. His old telephone number kept "popping into mind." Last week, Jack was involved in a serious fall that caused head trauma

Although he was seriously injured, he has no memory of the fall. What types of memory problems are illustrated by these two examples? a) Both involve retrograde amnesia. b) Both involve proactive interference. c) The telephone problem involves interference; the fall involves retrograde amnesia. d) The telephone problem involves anterograde amnesia; the fall involves retrograde amnesia.