AP PSYCHOLOGY

Detailed explanation-1: -A single-blind study is when participants do not know whether they were assigned to the control group or the treatment group. The experimenter, however does know. In a double-blind study, neither the experimenter nor the participants know to which group each participant was assigned.

Detailed explanation-2: -A double-blind study is one in which neither the participants nor the experimenters know who is receiving a particular treatment. This procedure is utilized to prevent bias in research results. Double-blind studies are particularly useful for preventing bias due to demand characteristics or the placebo effect.

Detailed explanation-3: -(SING-gul-blind STUH-dee) A type of clinical trial in which only the researcher doing the study knows which treatment or intervention the participant is receiving until the trial is over.

Detailed explanation-4: -Example: Yogurt Tasting The researchers know which yogurt containers are low-fat and which are high-fat, but participants are not told. This is an example of a single-blind study because the researchers know which participants are in the low-and high-fat groups but the participants do not know.

Detailed explanation-5: -In a single blind study, the participants in the clinical trial do not know if they are receiving the placebo or the real treatment. This is done to reduce the risk of errors, since some participants might produce spurious results if they know that they are taking the placebo or medication.