You Are Playing a Speed-Based Card Game with Your 64-Year-Old

Multiple Choice

You are playing a speed-based card game with your 64-year-old grandfather.The object of the game is to get rid of your cards as fast as you can.Once the first card is turned over, each player tries to play by deciding on which pile to play his or her card.When you were younger, your grandfather always beat you in this game.Now, you always beat him.Your grandfather is likely experiencing a slight decline in __________.

A) perceptual speed
B) numeric ability
C) spatial orientation
D) crystallized intelligence