Evaluation for practical Investigation for Cognitive psychology (8 marks)

Question 1

How does the practical investigation have low Generalisability?

Answer 1

• Point: The study has low generalisability
• Example: The sample consisted of 17 students which means the sample group is very small in size
• Explain: This means that it makes the results vulnerable to anomalies. It lowers the validity of the results

Question 2

How does the practical investigation have low Reliability?

Answer 2

• Point: The study has low reliability
• Examples: The study was done once only and no repeated trails took place once it was carried out.
• Explain: This means the results could not be as reliable as we thought. This means the results were not compared in the repeated trails

Question 3

How does the practical investigation have low internal validity?

Answer 3

• point: The study has low internal validity
• example: Extraneous variables were not controlled such as noise which could have been a distraction
• explain: This meant this could have affected the results of the study suggesting they are not as accurate since factors were not controlled

Question 4

How does the practical investigation have low external validity?

Answer 4

• point: The study has low external validity
• example: The sample size was small. It only had 17 participants
• explain: Due to the small sample size it is harder to apply to society and harder to know if these results can be applied to anyone

Question 5

How does the practical investigation follow ethical guidelines?

Answer 5

• Point: The study followed some ethical guidelines
• Example: The participants gave their consent to be part of the study. The participants were debriefed after and was told about the study. However, they were not given the option to withdraw their data
• Explain: This meant that participants felt they did not have the right to withdraw their data. Ethical guidelines were not strictly followed.