Before Hannah can leave the house, she must turn all four gas burners on her stove on and off 24 times, each in sequence. She performs this ritual because she does not trust her memory and fears she can't be sure the burners are actually off without doing this. Hannah is demonstrating which cognitive characteristic of OCD?

Two-year old Mason placed a crayon on paper and quickly drew a line across the page, explaining, "Car zooms!" Which of the following statements best describes Mason's drawing progress?

A) His gestures rather than the resulting scribbles contained the intended representation. B) His gesture made a recognizable shape, and then he labeled it. C) He used lines to represent the boundaries of objects. D) His drawing contained perceptual distortions because he had just begun to represent depth.

Unilateral damage to SI

A) eliminates the sense of touch in the contralateral hand. B) eliminates the sense of touch in the ipsilateral hand. C) produces contralateral neglect. D) produces contralateral deficits in stereognosis. E) both A and C