Talarico and Rubin (2003) recorded the memories of 54 students just after the te

Question

Talarico and Rubin (2003) recorded the memories of 54 students just after the terrorist attacks in the United states on September 11, 2001 – some memories related to the terrorist attacks on that day (called ‘flashbulb memories’ for their vividness and emotional content) and some were everyday memories; participants were randomly assigned to which type of memory to write about. They found that flashbulb memories were no more accurate than everyday memories, even though they were perceived to be.

Between groups or within groups?

what hyopthesis test?

Explanation / Answer

Between group error occurs due to the difference in treatment or experiment condition while the Within group error occurs when there is difference in opinion of the subjects under each treatment.

So, if we are trying to figure out if there was significant difference in memory perceived then it would be 'Between Group' because we are testing the difference in memory perceived of flashbulb memories and everyday memories. It would have been a within group test if we were trying to figure out if the students responded differently for the two different memories.

The hypothesis test would be -

Null Hypothesis - H0 : There is no significant difference in memory perceived by flashbulb memories and everyday memory.

Alternate Hypothesis - Ha : The flashbulb memories are more accurately perceived as compared to the everyday memory.

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