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The hypothesis that people systematically overattribute behavior to traits (at least for other people's behavior) is contested. A 1986 study tested whether subjects over-, under-, or correctly estimated the empirical correlation among behaviors (i.e., traits, see trait theory ). [ 8 ]
Johnny Matson (US), former professor of psychology at Louisiana State University, who was criticized starting in 2015 for his peer review practices as a journal editor, [127] [128] in 2023 had 24 of his research papers retracted because of undisclosed conflicts of interest, duplicated methodology, and a compromised peer-review process. [129] [130]
A good example of this is a study showed that when making food choices for the coming week, 74% of participants chose fruit, whereas when the food choice was for the current day, 70% chose chocolate. Insensitivity to sample size, the tendency to under-expect variation in small samples.
The same paper examined the reproducibility rates and effect sizes by journal and discipline. Study replication rates were 23% for the Journal of Personality and Social Psychology, 48% for Journal of Experimental Psychology: Learning, Memory, and Cognition, and 38% for Psychological Science. Studies in the field of cognitive psychology had a ...
Note that data dredging is a valid way of finding a possible hypothesis but that hypothesis must then be tested with data not used in the original dredging. The misuse comes in when that hypothesis is stated as fact without further validation. "You cannot legitimately test a hypothesis on the same data that first suggested that hypothesis.
For example, alongside publication bias and sample size effects, the decline effect in ocean acidification effects on fish behavior [9] was largely driven by outstanding effect sizes reported by two particular investigators from the same laboratory who are currently under investigation for potential scientific misconduct and data fabrication.
The strength hypothesis states that in strong situations (situations where one course of action is encouraged more than any other course of action due to the objective payoff), people are expected to demonstrate rational behavior, basing their behavior on the objective payoff. [42] An example of this is the collective laws of a country.
Pseudoscience can have dangerous effects. For example, pseudoscientific anti-vaccine activism and promotion of homeopathic remedies as alternative disease treatments can result in people forgoing important medical treatments with demonstrable health benefits, leading to ill-health and deaths.