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Rationalization Rationalization is a defense mechanism identified by Freud. According to Freud when people are not able to deal with the reasons…

Rational Emotive Therapy Rational Emotive Therapy, also called Rational Emotive Behavioral Therapy (REBT), was established by Albert Ellis. Ellis illustrated REBT through…

Rational The term rational refers to being of sound mind and having (or exercising) the ability to reason. In addition, in psychology…

Rapid Eye Movement Sleep (REM) There are two main categories of sleep, Non-Rapid Eye Movement Sleep (NREM; which contains stages 1-4; basically…

Range A statistical measure of variance. It is calculated by subtracting the lowest score from the highest score and then adding one…

Random Selection Random Selection is a process of gathering (in a truly random way) a representative sample for a particular study. Having…

Random Sample Since researchers can’t study every person in the world that is of interest to them, they need to study a…

Random Assignment Random assignment of participants to experimental conditions is a commonly used experimental technique to help ensure that the treatment group…

Quasi Experimental Design This is one type of experimental design that is very similar to the True Experimental Design with one key…

Quantitative Data Quantitative data are the more numerical type of data that can be manipulated and presented in graph form. These types…