Answer:
In studying problem solving and the phenomena that lead to failure, psychologists tend to employ problems that can be solved by reasoning.
Step-by-step explanation:
The problem solving related study is done by exposing an individual to a series of mathematical and personal problems. These problems present a moderate level of difficulty, but all require the individual to reason and reflect so that he can or cannot answer them, thus establishing an activity of failure or success to solve a possible problem.