Tommy's mom wants him to clean his room more often. She decides she will not make him do the dishes if cleans his room. This is an example of:

Janie is taking an exam in her history class. On the exam there is a question that asks her to state and discuss the five major causes of the Trans-Caspian War. Janie remembers four of them

She knows there is a fifth and can almost remember it; she knows that it is something like taxes. Janie is walking down the stairs, when all of a sudden, she remembers that the fifth point is taxes, but it is too late. Janie was suffering from a. encoding problems b. storage inversion c. the tip-of-the-tongue phenomenon d. evaluation overload e. anterograde amnesia

According to the article Zipping Up the Genes about twins reared apart, which group of people was used

as a control to be sure that the findings of the study were not only the result of having been separated from family (a) a large class of introductory psychology students (b) the researchers in the lab where the twin studies were conducted (c) the spouses of the twins being studied (d) a sample of people located by random dialing of phone numbers