QUESTIONS
125. What kinds of mental states are called perceptions?
126. Illustrate the change of a percept into a mental state not worthy of the name, caused by a change of the situation which involves neither a subtraction nor an addition of stimuli.
127. What impressions become a part of the percept, and what impressions do not?
128. Show that a percept contains not only less, but also more than the sensations corresponding to the stimuli of the moment.
129. What can we learn about perception from the drawings of children?
130. Illustrate the perception of a thing whose parts appear spatially separate. (None of the illustrations in the text strictly answers this question.)
131. What changes occur when a rabbit’s head is perceived as a duck’s head?
132. Are illusions signs of mental abnormality? What are they?
133. What two classes of illusions are distinguished in the text?