6.5.1 Practical Investigation

Question 1

Aim

Answer 1

To investigate whether there are differences in the number of participants who respond correctly/incorrectly when asked a leading question compared to those asked a non leading question.

Question 2

IV

Answer 2

• Non leading (what was policeman holding?)
• Leading (what hand was policeman holding magnifying glass in?)

Question 3

DV

Answer 3

Number of correct answers for leading or non leading question about identification.

Question 4

Which tail?

Answer 4

1, past research shows there will be a sig difference.

Question 5

Experimental

Answer 5

Individuals given a leading question will have significantly less recall of the correct object compared to those with a non leading question.

Question 6

Null

Answer 6

There will be no significant difference in accuracy of recall of the correct object between those given a leading question and those given a non leading question. Any difference found will be due to chance.

Question 7

Sample

Answer 7

• 20 college students
• 17 to 18 years old
• 3 male, 17 female
• Opportunity sample
• Many ethnicities

Question 8

Sample Strength

Answer 8

Generalisability
- Not ethnocentric
- Many ethnicities used
- Can represent across a large population

Question 9

Sample Weakness

Answer 9

Generalisability
- 3 male
- Gynocentric
- Can’t generalise to populations of 50/50

Question 10

Procedure

Answer 10

1. Gain informed consent from all participants
2. 2 min whodunnit video in silence in a classroom
3. 1 minute to recall details
4. A given leading question, B given non leading, 2 mins to answer
5. 10 minute recall task on EWT
6. All answered the B questions

Question 11

Procedure Strength

Answer 11

Reliability
- Standardised procedures (timings, order)
- Can be replicated to check findings consistency

Question 12

Procedure Weakness

Answer 12

Validity
- Clip watched was unrealistic and staged
- May not show memory if real life situation

Question 13

Results

Answer 13

Leading question:
- 4 correct
- 6 incorrect

Non leading question:
- 4 correct
- 6 incorrect

Question 14

Results Strength

Answer 14

Application
- EWT is reliable
- Can be used

Question 15

Results Weakness

Answer 15

Reliability
- Loftus and Palmer
- Inconsistency in results

Question 16

Stats test used and why

Answer 16

Chi squared
- Independent measures
- Nominal
- Test of difference

Question 17

Conclusion

Answer 17

Observed value of 0.029 is lower than critical value 2.71. Accept null.