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As early as 1901,____ recognized the need for a control group.
Toilet Trained
The process by which young children learn to use the toilet for urination and defecation independently.
Parental Death
The loss of a parent, which is a profoundly impactful event in a person's life, often resulting in significant emotional and psychological adjustments.
Cognitive Dissonance Theory
The theory that we act to reduce the discomfort (dissonance) we feel when two of our thoughts (cognitions) are inconsistent. For example, when we become aware that our attitudes and our actions clash, we can reduce the resulting dissonance by changing our attitudes.
Leon Festinger
A psychologist best known for his theory of cognitive dissonance, which describes the discomfort experienced when holding conflicting ideas or beliefs.
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