AP PSYCHOLOGY

Detailed explanation-1: -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-2: -Double-blind trials are seen as the most reliable type of study because they involve neither the participant nor the doctor knowing who has received what treatment. The aim of this is to minimize the placebo effect and minimize bias.

Detailed explanation-3: -Answer and Explanation: No, double-blind experiments do not increase the placebo effect. On the contrary, the double-blind procedure is conducted to minimize, decrease, and eliminate the influence of the placebo effect.

Detailed explanation-4: -In these experiments, one group of subjects receives the “real thing"-the active substance being tested. The other half receives a placebo designed to appear, as much as possible, like the real thing. Individuals in both groups don’t know whether they are getting the real treatment or placebo (they are “blind").

Detailed explanation-5: -A placebo is an inactive substance that looks like the drug or treatment being tested. Comparing results from the two groups suggests whether changes in the test group result from the treatment or occur by chance.