Without informing them, a researcher assigns participants to either an experimental or a placebo group. The researcher's assistants who test the participants do not know who belongs in which group. The experiment has used a
a. single-blind technique.
b. strong experimental manipulation.
c. double-blind technique.
d. behavioural measure.
Answer: double-blind technique.
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Psychology Chapter 6
- In the early stages of a research project, the researcher would want as _____ as possible in order to demonstrate that a relationship between variables exists.
- Responses by participants to interviews and questionnaires are _______ measures.
- Participants consume 8, 16, 24, or 32 ounces of alcohol and are then asked to recite the alphabet as quickly as possible. The amount of time it takes the participant to correctly recite the alphabet would be an example of a _____ measure.
- A researcher who measures the speed of helping in an emergency is using a ________ measure.
- A ceiling effect occurs when a measure results in too many
- A researcher conducts his study with a small number of participants in order to reveal whether the instructions and procedures are clearly understood. This procedure is an example of a
- In a study examining the effect of appearance on judgments of criminal behaviour, a researcher asks questions about the surroundings and the victim in order to disguise the dependent measures in the study. These unrelated questions are referred to as
- Which of the following statements is true regarding the use of staged manipulations? Staged manipulations
- A researcher designed an experiment to test the effects of a top-secret vitamin supplement on the strength of weight-lifters. Thimble lifting would not be a useful measure of strength because thimble lifting
- A researcher presents his dog with a bowl of normal dog food and a bowl of vitamin enriched dog food. He then records the amount of each type of food the dog consumes as a measure of his dog's food preference. What kind of measure has the researcher used?
- A manipulation check is especially important in studies
- A psychologist is interested in the effect of physical attractiveness on ratings of punishment assigned to a driver in an automobile accident. Participants read an account of the accident and received a written description of a physically attractive or unattractive defendant. The manipulation of attractiveness would be an example of a _____ manipulation.
- In drug research, a(n) _____ has occurred when it is unclear whether improvement is due to properties of the drug or the expectation about the effect of the drug.
- Why would an investigator use more than one dependent measure?
- When a researcher submits a paper to a journal for publication, other researchers knowledgeable in the area of research carefully scrutinize the paper and recommend acceptance or rejection. This process is known as
- Strong manipulations are used to ________ the effect of the ________ variable.
- Which of the following physiological measures would you recommend a researcher use to compare brain images between individuals with and without Alzheimer's disease?
- Which physiological measure is frequently used to measure muscle tension?
- Investigators will sometimes use deception in the procedures to address the problem of
- Using hypnosis to separate pain from its conscious experience is an example of
- Anthony's heart rate and blood pressure decrease and his brain waves become primarily alpha after a few minutes of repeating a mantra. Anthony is ________ .
- Which of the following statements about hypnosis is true?
- A person who begins to smell colors after taking a hallucinogen is experiencing a phenomenon called ________ .
- Which of the following is NOT classified as a hallucinogen?