What is the youngest age at which most children begin to develop theories of mind?

__________ gestures are often used in conjunction with descriptions of motion events, with the speaker making hand or finger movements to mimic the manner and path of the action.

a. Iconic b. short-term c. nondeclaritive d. state-dependent

Which of the following is most likely to make time out from positive reinforcement effective?

a. Administering time-out in brief periods b. Withholding the reason for the time out c. Following time-out with immediate reinforcement d. Ending time-out early upon observing acceptable behavior