The six major facial expressions discussed in the text are widely considered to be

Follow-up research indicates that even though preschoolers have difficulty with Piagetian class inclusion tasks, they

A) have very complex category systems. B) organize their everyday knowledge into nested categories at an early age. C) are capable of abstract reasoning. D) cannot use logic or causal reasoning to form global categories.

"Emotional disengagement" is characterized by:

a) Frequent negative communication and unsatisfying sexual activity b) Poor communication and infrequent sexual activity c) Good communication and no sexual activity d) Conflicted communication and frequent sexual activity