directional hypothesis

a scientific prediction stating (a) that an effect will occur and (b) whether that effect will specifically increase or specifically decrease, depending on changes to the independent variable. For example, a directional hypothesis could predict that depression scores will decrease following a 6-week intervention, or conversely that well-being will increase following a 6-week intervention. Also called directional alternative hypothesis; one-tailed hypothesis. Compare nondirectional hypothesis.

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Psychology term of the day

April 19th 2024

acute stress disorder (ASD)

Sorry, "acute-stress-disorder-asd" is not in the Dictionary of Psychology. Please report to APA if you believe this is an error.