Skeels found evidence that intelligence depends on stimulation in his investigation of ______

Which of the following will decrease the likelihood of behavior reoccurring?

A) negative punishment B) negative reinforcement C) positive reinforcement D) fixed-ratio reinforcement

With regard to first impressions,

a. we needn't worry; subsequent impressions easily erase first impressions b. negative behaviors color them more than do positive behaviors c. we expect poor first impressions due to physical appearance, attitudes, and reputations d. they count little in determining whether we'll continue interacting with another