A placebo is an important element of many clinical trials because Group of answer choices it serves as a control for the experim
ent. it allows the researcher to adjust for psychological effects of receiving medical attention. use of the placebo can help avoid confounding. All of the choices are correct.
Placebo in clinical trials is an element of research that is more of a deceiving treatment given to the participants or a group of participants. It acts as a psychological effect on the participants who already know that the actual treatment will improve their health or condition etc. This means that it helps the researchers to adjust the psychological effects of receiving medical attention and is often refereed to as placebo control as it can control outside factors. Similarly, these outside factors are known as confounding factors hence a placebo also assists in controlling or avoiding confounding factors. Hence, All of the choices are correct.
Explanation: Hitler knew that his country was but a shadow of its former glory. He also knew that it’s citizens were upset with the fact that Germany had to pay war reparations.
The reason why Phyllis schlafly was an important figure in the battle to ratify the equal rights amendment (ERA) is : She was a prominent female opponent of the ERA she was regarded as one of the most conservative female activist during that period
Vygotsky's socio-cultural theory teaches us that human learning is a social process and the people first get their intelligence from the society or the cultural group from which they originate. the major description of the theory lies in the theme that social interaction with society and culture plays a great and important role in cognitive development.
Mrs. Jones has been caring for her terminally ill mother for a year now. She has continued to work at a demanding job, and she has three active teenagers. These long-term stressors should reduce the number of NK cells, thereby decreasing immune system functioning.