"Mood disorders" refer to a group of disorders involving severe disturbances ranging from __________ to ____________

Object _____ offers powerful evidence that perceptions are more than the sum of sensory parts because our perception of the same image changes beyond our control as we look at it

a) ambiguity b) motion c) shading d) perspective

Which of the following differentiates insightful solutions from other forms of problem-solving?

a. Insightful solutions focus on a reduction of alternatives in order to reach understanding. b. The gaining of insight is a rapid process. c. Insightful solutions revolve around habitual modes of thought applied to new and interesting situations. d. Several detailed and workable solutions are derived from a tentative general solution.