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5PAHPRM3 Coursework Data Analysis File 2021/2

This document contains details of a data file which you are required to analyse for the 5PAHPRM3 Coursework.

Nature of the Research

You are provided with a datafile that contains data from a hypothetical replication of the experiment reported by Mercer & Duffy (2015):

Mercer, T. & Duffy, P. (2015). The loss of residual visual memories over the passage of time. The Quarterly Journal of Experimental Psychology, 68(2), 242–248.

You should familiarise yourself with the contents of this article before attempting the data     analysis coursework task in order to understand the meaning of the analyses required, and to allow you to interpret these analyses & answer the questions in the assessment quiz.

The replication used a procedure that differs from the original in the way that the ITI was controlled. Mercer & Duffy varied the ITI between trials (within- participant), thus in the original study, the short ITI is ‘shorter than the average ITI experienced’ . The replication aimed to investigate whether the       ‘decay effect’ (effect of ITI duration) was still observed when this variation was the absolute length    of the ITI was varied between participants, without the variation in the relative length of ITI.

The replication study randomised each participant to one of two groups. Those in the first group    experienced either the short (0.3 s) ITI between every trial. Those in the second group experienced the long (8.3 s) ITI between every trial. Aside from this, the stimuli and trial sequences used were   exactly those described by Mercer & Duffy (2015).

Structure of the Data File

The list below shows the variables in the data file.

Variable name  Label (description) for variable