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Internal Assessment : Loftus and Palmer Study

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Introduction

Experiment on leading questions after an event Miroslav Cuculiza (001102-055) IB Psychology SL 14/2/11 Word Count:1203 Table of Contents Abstract ...........................................................................................2 Introduction.......................................................................................3 Methods...........................................................................................4 Results.............................................................................................5 Discussion........................................................................................6 References.......................................................................................7 Appendix i.........................................................................................8 Appendix ii.........................................................................................9 Appendix iii......................................................................................10 Abstract The experiment was intended to study memory whether or not can be influenced changed after it's formed. The aim of the study was to investigate eyewitness change in memory after supplied information after an event. The method consists of being and independent measure design , it has opportunity sampling within the participants . The participants are students from The American School of Tegucigalpa and they all have Spanish as there native language . The results consist of mean , mode, standard deviation , and the range of the speed estimates given by the participants . The verb contacted had a higher estimate than bumped . The conclusion of the experiment can be that leading questions asked after an event can influence a eyewitness memory . Introduction The Loftus & Palmer study was a psychological study carried out by Elizabeth Loftus and Palmer in 1974. The aim of the study was to investigate whether or not an eyewitness's memory can be changed by information supplied to them after an event. Loftus and Palmer also wished to discover whether or not a person's memory can be influenced by this information. ...read more.

Middle

And are asked 5 questions not having to do with the speed of the vehicle so the participant can be manipulated before answering the critical question. Condition 1: 'About how fast were the cars going when they smashed into each other?' Condition 2: 'About how fast were the cars going when they collided into each other?' Condition 3: 'About how fast were the cars going when they bumped into each other?' Condition 4: 'About how fast were the cars going when they hit each other? Condition 5: 'About how fast were the cars going when they contacted each other?' 6.Pick up the results of the 5 conditions 7.End the experiment 8.Debriefing of experiment Results: Speed estimates for the verb used in the speed question In the table we can see that the phrasing of the question brought about a change in the speed estimate . With contacted having a higher speed than bumped. The range between the highest and the lowest is 6.75 , the mean is 47.4 , the median is 45 , and the standard deviation is 2.37. Discussion The memory of the speed of how fast was the cars were traveling could have been distorted by the verbs used which had been used to characterize the intensity of the crash . ...read more.

Conclusion

* I understand that certain facts about the study might be withheld from me, and the researchers might not, initially, tell me the true or full purpose of the study. However, the complete facts and true purpose of the study will be revealed to me at the completion of the study session. * I understand that participation in research is not required, is voluntary, and that, after any individual research project has begun, I may refuse to participate further without penalty. By signing this form I am stating that I am 16 years of age or older, and that I understand the above information and consent to participate in this study being conducted at the American School of Tegucigalpa. If I am not 16 years of age or older I must have a parent signature in order to participate. Name (printed) _____________________________________________________________________________ Signature: _______________________________________________________ Date ________________ Parent Name (printed) _________________________________________________________________ Parent Signature ___________________________________________________Date_________________ Appendix iii Dear participants , The purpose of the experiment was to supply you with information after the clip you saw of the car crash , to get to influence your eye witness memory . Thank you for participating in the experiment and for conducting it in the right way, good luck in replicating this experiment in future psychology school experiments . The results shown in the table show that contacted influences you more in the intensity of the crash than bumped . 1 ...read more.

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