Personal investigations 1 23/24

What type of experimental design was used in the study?

• Independent groups design

• Repeated measures design

• Matched pairs design

• Correlational design

What was identified as a disadvantage of using the type of experiment conducted?

• High cost of implementation

• Limited control over variables

• Potential for error due to individual differences

• Difficulty in replicating results

Which of the following is a confounding variable that could have affected the study?

• Time of day

• Temperature of the room

• Color of the experimental room

• Background noise

What was the null hypothesis in the study?

• The use of mnemonics will improve memory recall

• The use of mnemonics will not affect memory recall

• The use of mnemonics will impair memory recall

• The use of mnemonics has no measurable effect

What sampling method was used in the study?

• Random sampling

• Stratified sampling

• Opportunity sampling

• Systematic sampling

What is one disadvantage of the sampling method used in the study according to the document?

• Lack population validity

• High cost of implementation

• Time-consuming process

• Limited geographic scope

How was the issue of valid consent addressed in the study?

• Valid consent was not an issue; it was easily obtained

• Consent was obtained through coercion

• Consent forms were distributed after the study

• Participants were not informed about the study

What method was used to ensure internal reliability in the study?

• Use of inter-rater reliability

• Single observer assessment

• Automated data collection

• Random sampling technique

According to the document, how was confidentiality maintained in the study?

• By using student ID in place of names

• By public disclosure of participant data

• By allowing unrestricted access to data

• By not collecting any personal data

What strategy was mentioned to handle the risk of harm in the study?

• Referral to student help services

• Ignoring the risk of harm

• Providing financial compensation

• Ensuring anonymity only