Examlex
Compare some major ways that the historical subtypes of schizophrenia can present (paranoid, catatonic, disorganized, undifferentiated, residual) in terms of symptoms, treatment, and prognosis.
Internal Validity
The extent to which a research study can demonstrate a causal relationship between variables, free from the influence of external factors.
External Validity
External validity refers to the extent to which the results of a study can be generalized or extended to other situations, people, settings, and measures.
Experimenter Effects
Effects produced or influenced by clues to the hypotheses under examination, inadvertently communicated by the experimenter.
Laboratory Experiments
Controlled tests or investigations conducted in a lab setting where variables can be isolated and manipulated to study their effects.
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