An Experimenter Conducts a Study in Which She Wants to Investigate

question 22

Multiple Choice

An experimenter conducts a study in which she wants to investigate the effects of eating chocolate on concentration.To do this she gives 20 people in an experimental condition a bar of chocolate and gives another 20 people in a control group nothing.After the experimental group has finished their chocolate she asks both groups to perform tasks designed to test their concentration.Which of the following statements is false?

• A)The experiment has a within-subjects design.
• B)The results could be analysed using a t-test.
• C)The independent variable has two levels.
• D)The dependent variable is level of concentration.
• E)The addition of a control group controls for threats to internal validity.

---

Definitions:

Displacement

In physics, the movement of an object from one place to another or the volume displaced by an object in a fluid.

Repression

A defense mechanism where unpleasant thoughts, memories, or feelings are unconsciously excluded from awareness.

Defense Mechanism

A psychological strategy unconsciously used to protect a person from anxiety arising from unacceptable thoughts or feelings.

Denial

A defense mechanism in which confrontation with a reality is avoided by denying the existence of the problem or reality.