Examlex
A measuring instrument is valid when the results can be repeated at subsequent measurements of the concept.
Severe Depression
A mental health condition characterized by profound feelings of persistent sadness, hopelessness, and lack of interest in activities, combined with physical symptoms that significantly impair daily functioning.
Dissociative Disorder
A mental disorder that involves a disconnection and lack of continuity between thoughts, memories, surroundings, actions, and identity.
Schizophrenia
A complex psychiatric disorder that affects a person's ability to think, feel, and perceive reality.
Testify
To make a statement based on personal knowledge or belief, usually in a court of law, under oath.
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