Cresyl violet is a stain used to identify axon terminals in the brain

Your friend works in a lab and is paid for each three blood smears analyzed. Your friend is operating on which schedule of reinforcement?

a. fixed ratio b. variable ratio c. fixed interval d. variable interval e. random interval

Despite their higher achievement, __________ often blame poor performance on __________

A) girls; lack of ability B) boys; lack of ability C) girls; poor effort D) boys; good luck