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Core Studies

Psychological Investigations

 

Experiment Questions

 

1.

 

A researcher has conducted an experiment to see if people recall more words from a list of ten words when they learn and recall in the same room rather than if they learn in one room and recall in a different room. This was an independent measures design.

 

The results were as follows:

 

 

1 (a) Suggest an appropriate null hypothesis for this experiment

[4]

 

(b) Identify the independent variable and the dependent variable in this experiment.

[2]

 

2 (a) What is meant by an ?independent measures? design?

[2]

 

(b) What is meant by a ?repeated measures? design?

[2]

 

(c) Outline one strength and one weakness of using an independent measures design for this experiment.

[6]

 

3 Outline two findings that might be drawn from these data.

[4]

 

Total [20]

 

 

 

2.

 

Researchers conducted an experiment to investigate the helping behaviour of males and female pupils in response to a female student dropping her books in the corridor of a school.

 

1 (a) What type of experiment is the one described above?

[2]

 

(b) Outline one strength and one weakness of this type of experiment.

[6]

 

2. Identify the independent and dependent variable in this experiment.

[2]

 

3 (a) Suggest an appropriate one tailed hypothesis for this experiment

[4]

 

(b) Suggest an appropriate null hypothesis for this experiment

[4]

 

4 Outline one ethical issue raised in this study.

[2]

 

Total [20]

 

 

 

3.

 

An experiment was carried out to find out if people would remember more words if they were listening to classical music compared to listening to rock music. This was a repeated measures design and participants were asked to learn and recall 30 words.

 

1 (a) Identify the independent and dependent variables in this experiment.

[2]

 

(b) Suggest an appropriate one tailed hypothesis for this experiment

[4]

 

2 Outline one strength of using a repeated measures design for this experiment.

[3]

 

3 When repeated measures designs are employed experimenters often use counterbalancing. Explain how in this experiment counterbalancing could be used.

[3]

 

4 Describe one possible confounding variable in this experiment and suggest how this could be controlled.

[3]

 

5 Describe one ethical issue that the researchers need to consider when carrying out this experiment.

[2]

 

6 Suggest an alternative way that the researchers could measure memory.

[3]

 

Total [20]

 

 

 

4.

 

An experiment was carried out to test the difference between individuals with autism and non autistic individuals? mind reading skills. This was done by testing their ability to recognise emotions from pictures of eyes.

 

Below is a table showing the mean scores of autistic and ?normal? participants ability to recognise emotions from a person?s eyes. The maximum score possible was 25 and if a participant simply guessed the score should be 15.

 

 

1 Identify the independent and dependent variables in this experiment.

[2]

 

2 Explain why this type of experiment is known as a quasi or natural experiment.

[3]

 

3 Describe a situational variable that may have to be controlled in this experiment

[2]

 

4 Suggest an appropriate null hypothesis for this experiment.

[3]

 

5 Outline two findings that might be drawn from the data in the table.

[4]

 

6 (a) What is meant by an ?independent measures ? design?

[2]

 

(b) Outline one strength and one weakness of an independent measures design.

[4]

 

Total [20]

 

 

 

5.

 

An experiment was carried out to see if leading questions could have an effect on participants? memories. All of the 100 participants were shown a video of a car crash.

 

50 of the participants were asked 'How fast were the cars going when they hit each other??

 

50 of the participants were asked 'How fast were the cars going when they smashed into each other?'

 

One week later, the participants returned and, without viewing the film again, they answered a series of questions about the accident. The critical question was 'Did you see any broken glass?' There was in fact no broken glass in the film.

 

Below is a table of the response to the question ?Did you see any broken glass?

 

 

1 Identify the independent and dependent variables in this experiment.

[2]

 

2 Suggest an appropriate one tailed hypothesis for this experiment

[4]

 

3 Identify the experimental design used by this experiment and outline one weakness of this design.

[4]

 

4 Outline two findings that might be drawn from this data.

[4]

 

5 Outline one strength and weakness of using a laboratory experiment for this research.

[6]

 

Total [20]

 

 

 

 

6.

 

A researcher carried out an experiment to investigate if pictures would be easier to remember than words. 20 pictures and 20 words were used and the experiment used an independent measures design.

 

Below are the results of the experiment

 

 

1 Identify the independent variable in this experiment.

[1]

 

2 (a) Suggest an appropriate one tailed hypothesis for this experiment

[4]

 

(b) Suggest an appropriate null hypothesis for this experiment

[4]

 

3 Outline one weakness of the experimental design for this study.

[3]

 

4 Outline one finding that can be made from the Bar chart

[2]

 

5 Outline one weakness and one strength of using an experiment to test memory.

[6]

 

[Total 20]

 

 

 

 

7.

 

The following results were obtained from an experiment into preferences of two types of cola drinks. Each participant had to rate the tastiness of both types of cola on a scale of 1 to 10. With 1 being not at all tasty and 10 being very tasty.

 

 

1 Draw a suitable chart to display these data above

[4]

 

2 State one conclusion that can be made from your chart

[2]

 

3 Identify the dependent variable in this experiment.

[1]

 

4 What type of experimental design was used in this experiment?

[1]

 

5 Outline one strength and one weakness of the experimental design for this study.

[6]

 

6 Describe a situational variable that may have to be controlled in this experiment

[2]

 

7 Suggest an appropriate one tailed hypothesis for this experiment

[4]

 

[Total 20]