在 Cambridge 字典裡，可以看到這個單字被標示為 「old-fashioned, informal」，老就算了，還不正式！但這個字看起來超級好記耶……
illusion, delusion, hallucination 錯覺，幻覺，妄想 的意思和用法
illusion 錯覺（正常人判斷錯誤）: Something that is false or not real but that seems to be true or real, e.g.,
The video game is designed to give the illusion that you are in control of an airplane.
hallucination 幻覺（被影響的正常人）: an experience in which you see, hear, feel, or smell something that does not exist, usually because you are ill or have taken a drug, e.g. A high temperature can cause hallucinations.
delusion 妄想（指瘋子的想法）: A delusion is a fixed belief that is not amenable to change in light of conflicting evidence, e.g., she is under the delusion that we will finish on time.
Internal/External Validity: the Control of Independent, Dependent, and Extraneous Variables in Laboratory or Field Experiments.
Internal Validity (IV): The extent to which we can say that the effect is actually caused by the manipulation. The key point is to take good control of manipulation implementation & Extraneous Variable. Field experiment is inevitably bad for IV but good for External Validity (EV)–the extent to which the effect found can be replicated or generalized to the real world settings.Continue reading “Internal/External Validity: the Control of Independent, Dependent, and Extraneous Variables in Laboratory or Field Experiments.”
hyphen, compound adjective
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