n 1974, Loftus and Palmer conducted a classic study demonstrating how the language used to ask a question can influence eyewitness memoryIn the study, college students watched a film of an automobile accident and then they were asked questions about what they saw. One group was asked “About how fast were the cars going when they smashed into each other?" Another group was asked the same question except the verb was changed to "hitinstead of smashed into". The "smashed into" group reported significantly higher estimates of speed than the "hit" group. Suppose a researcher repeats the study with a sample of today's college students and obtains the following results: Smashed into n = 15; M = 40.8; SS = 510 Hit n = 15; M = 34.0; SS = 414 Do the results indicate a significantly higher estimated speed for the "smashed into" group? What is the effect size?
n 1974, Loftus and Palmer conducted a classic study demonstrating how the language used to ask a question can influence eyewitness memoryIn the study, college students watched a film of an automobile accident and then they were asked questions about what they saw. One group was asked “About how fast were the cars going when they smashed into each other?" Another group was asked the same question except the verb was changed to "hitinstead of smashed into". The "smashed into" group reported significantly higher estimates of speed than the "hit" group. Suppose a researcher repeats the study with a sample of today's college students and obtains the following results:
Smashed into n = 15; M = 40.8; SS = 510
Hit n = 15; M = 34.0; SS = 414
Do the results indicate a significantly higher estimated speed for the "smashed into" group? What is the effect size?
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