Secondary sources such as review articles are best used to obtain references to the primary literature, which you then consult directly. You want to demonstrate your ability to review and organize scholarly material, not someone else's. Every statement of fact, and every idea or opinion not your own, must be referenced unless the item is part of common knowledge. Some judgment must be used in deciding whether an item requires a reference. If you are uncertain, either check with your professor or err on the side of excessive acknowledgment.
Psychologists study human behavior.
A person can be considered a type of machine. Guideline 6 Do not hand in a paper which is the same or similar to one you have handed in elsewhere, unless you have the permission of both professors in advance. It is dishonest to claim course credit more than once for the same work. In addition, it deprives you of the opportunity of researching and gaining knowledge on different topics, one of the aims of a college education. It is an excellent idea to ask someone to criticize a completed paper before you submit it, and to bring to your attention errors in logic, grammar, punctuation, spelling, and expression.