Question

ones favorite motion picture is not really a \movie\ at all, but rather a succession of still pictures presented at a specific rate that elicit a phenomenon known as:
perceptual grouping.
primacy.
mentalism.
illusory motion.

Explanation:

To solve this, we analyze each option:

• Perceptual grouping: Involves organizing visual elements into groups, not related to motion from stills.
• Primacy: Related to memory (first items remembered), not motion perception.
• Mentalism: A philosophical approach to mind, irrelevant here.
• Illusory motion: Occurs when still images shown rapidly create the illusion of motion (like in movies, due to persistence of vision). This matches the description of movies as successive stills creating motion.

Answer:

D. illusory motion