When trying on new glasses at Lensmasters, Kevin remarks that he can see more details when he looks directly at the letter chart rather than when he looks from the side of his eye. Dr. Eyenstein says, “Well Kevin, that happens because your ____ is greatest in the ____.”?

A teacher gives her class at least one unannounced quiz every week. The students never know which day it will fall on. The teacher is attempting to influence their study habits by using a __________ schedule

a) variable-ratio b) fixed-ratio c) variable- interval d) fixed-interval

What type of research is designed to provide practical solutions to immediate problems?

a) Hypothetical b) Applied c) Experimental d) Theoretical