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Eyewiyness Testimony - Significantly more RPs who are asked leading questions will state they saw a smashed headlamp than those who are not asked leading questions.

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Introduction

Patrick Southern Psychology Coursework Eyewitness Testimony Contents Introduction Methodology Hypothesis Analysis Bibliography Conclusion Project Brief Statement of hypothesis Significantly more RPs who are asked leading questions will state they saw a smashed headlamp than those who are not asked leading questions. Direction of Hypothesis A directional, or 'one tailed' hypothesis has been given. This means that it predicts specifically what will happen. This type of hypothesis has been given because looking at Loftus' 1975 study into eyewitness testimony (which is in ways similar to this study) we can predict the results. By doing this, validity is increased if the hypothesis is proved to be correct. ...read more.

Middle

A disadvantage of this design though is that there is greater scope for participant variability - for example if 50% of the RPs in one group have been in a car crash, their feelings towards the subject matter could affect the results. Bias / Confounding Variables Distractions: Such as other people, noises, etc. To minimise these distractions I will conduct my research in a quiet room. Light Conditions: This could affect what the RP will see in the photo as they only get a short amount of time to look at it. So that each RP gets a good look at the photo, the room must also well lit, and this must be constant. ...read more.

Conclusion

This keeps conditions (distractions, lighting, etc.) at a constant. Statistical Significance A Statistical Significance of 1, 5 or 10% can be chosen. 1% is used when the researchers have to absolutely certain of their results, and 10% when a researcher only has to be 90% sure that their hypothesis is correct. I have chosen 5% because it minimises type 1 and 2 errors, which are: Type 1 (10%) - Greater chance of error in hypothesis. Type 2 (1%) - Rejecting hypothesis when it is correct. Ethical Considerations RP is uncomfortable taking part: All RPs must be made aware before taking part that they can withdraw at any time. RPs wishing anonymity: All RPs taking part must be kept anonymous. ...read more.

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