Y1 Week 4: Test 1 - Types of experimental Designs Quiz

Which experimental design?

An experiment wants to find out if people think blondes are less intelligent, participants are asked to estimate the IQ of 10 photos – 5 photos of a person in a blonde wig and 5 photos of a person in a brunette wig.

• None of them

• Independent Measures

• Matched Pairs

• Repeated Measures

Which experimental design?

In a research study, psychologists showed one group of participants a set of 20 photographs of people and a second group of participants a set of 20 photographs of scenery. Participants were asked a week later to identify the photographs they had originally seen out of a larger set of photographs. They expected to find that participants were more likely to correctly remember the photographs of people.

• Matched Pairs

• Independent Measures

• Repeated Measures

Which experimental design?

In an experiment to find out if people are better at remembering in the morning or the afternoon, a psychologist gives participants a list of 20 words to remember one group before breakfast and another group after lunch.

• Repeated Measures

• Matched Pairs

• Independent Measures

Which experimental design?

A psychologist wants to find out if people are better able to remember pictures or words. He gives half the participants a PowerPoint with a series of 20 words presented sequentially. He gives the other half of participants a series of 20 pictures presented sequentially. Two weeks later they complete the other condition.

• Repeated Measures

• Matched Pairs

• Independent Measures

Which experimental design?

A researcher has conducted an experiment to investigate whether chewing gum influences concentration. She recorded how many changes were detected in a ‘spot the difference’ puzzle, by people chewing gum when completing the task. These same participants were then asked to complete a different spot the difference puzzle without chewing gum and the number of differences detected were again recorded.

• Independent Measures

• Repeated Measures

• Matched Pairs

Imagine you are going to conduct an experiment to investigate whether males or females have a better memory for faces. Explain why an independent groups design would be the only possible design you could use.

• A within-subjects design would allow for repeated measures of memory.
• A crossover design would provide more data on memory performance.
• A matched pairs design would eliminate gender differences in memory.
• The IV is a pre-existing participant difference so can only take part in one condition.

Match the definition with the type of experimental design

• Matched Pairs

• Participants take part in one condition of the experiment ONLY

• Independent Measures

• Participants take part in both conditions of the ​

  Experiment (Condition A then condition B)

• Repeated Measures

• Pts are matched on important variables crucial for study & one particpant conducts condition A & the other  condition B)

Which experimental design?

In a study to determine if listening to classical music improves concentration, one group of participants listens to classical music while completing a task, and another group completes the task in silence.

• Matched Pairs

• Independent Measures

• Repeated Measures

Which experimental design?

Researchers want to find out if people are better at solving puzzles in the morning or in the evening. Participants are given a puzzle to solve at 8 AM and another puzzle to solve at 8 PM.

• Repeated Measures

• Matched Pairs

• Independent Measures

Which experimental design?

In an experiment to test the effect of caffeine on memory, participants who reported to drink no caffeine were paired then one participant was given a caffeinated drink and the other a placebo before taking a memory test.

• Independent Measures

• Repeated Measures

• Matched Pairs