Return to the Interpersonal Reactivity Index (IRI) page
						
									INTERPERSONAL REACTIVITY INDEX (IRI)
SCRIPT INFO

Script Author: Katja Borchert, Ph.D. (katjab@millisecond.com) for Millisecond Software, LLC
Date: 07-28-2016
last updated:  07-28-2016 by K.Borchert for Millisecond Software LLC

Copyright ©  07-28-2016 Millisecond Software


BACKGROUND INFO

											*Purpose*
This script implements a computerized version of the Interpersonal Reactivity Index (IRI) as described in:

Davis, M.H. (1979). INDIVIDUAL DIFFERENCES IN EMPATHY: A MULTIDIMENSIONAL APPROACH.
Dissertation (Scales published on p. 52).

Davis, M. H. (1983). Measuring individual differences in empathy: Evidence for a
multidimensional approach. Journal of Personality and Social Psychology, 44, 113–
126.

											  *Task*
28 5-point Likert questions on 4 subscales (7 question per subscale) with two anchors
(A=Does not describe me well; E=Describes me very well). 


DATA FILE INFORMATION: 
The default data stored in the data files are:

(1) Raw data file: 'IRI.iqdat'

date, time, group, subject:		date and time script was run with the current group/subjectnumber 
build:							the Inquisit build 

q*_response:					response given (in assigned values) - reversed scored items automatically reversed scored
q*_latency:						how much time (in ms) the participant spent on the surveypage with this particular question (the last time this particular surveypage was visited)


(2) Summary data file: 'IRI_summary.iqdat' (Inquisit Lab: one data file per participant)

script.startdate:				date script was run
script.starttime:				time script was started
script.subjectid:				subject id number
script.groupid:					group id number
script.elapsedtime:				time it took to run script (in ms)
computer.platform:				the platform the script was run on
/completed:						0 = script was not completed (prematurely aborted); 1 = script was completed (all conditions run)

4 subscales (reversed scoring automatically done by computer) - Min: 0 - Max: 28 on each scale

/PerspectiveTaking:				the tendency to spontaneously adopt the psychological point of view of others
/Fantasy:						taps respondents' tendencies to transpose themselves imaginatively into the feelings and actions of fictitious characters in books, movies, and plays
/Empathic Concern: 				assesses "other-oriented" feelings of sympathy and concern for unfortunate others
/Personal Distress:				measures "self-oriented" feelings of personal anxiety and unease in tense interpersonal settings



QUESTIONNAIRE SET-UP: 

paper and pencil questionnaire: http://fetzer.org/sites/default/files/images/stories/pdf/selfmeasures/EMPATHY-InterpersonalReactivityIndex.pdf

28 5-point Likert Scale (A, B, C, D, E)
Scoring: (Note: computer scores reversed scored questions are automatically)
A = 0
B = 1
C = 2
D = 3
E = 4

Subscales (taken from Davis, 1983, p. 113):

Perspective Taking – the tendency to spontaneously adopt the psychological point of
view of others
Fantasy – taps respondents' tendencies to transpose themselves imaginatively into
the feelings and actions of fictitious characters in books, movies, and plays
Empathic Concern – assesses "other-oriented" feelings of sympathy and concern for
unfortunate others
Personal Distress – measures "self-oriented" feelings of personal anxiety and unease
in tense interpersonal settings


EDITABLE CODE:
check below for (relatively) easily editable parameters, stimuli, instructions etc. 
Keep in mind that you can use this script as a template and therefore always "mess" with the entire code to further customize your experiment.

The parameters you can change are:

/pageinstructions:					the instructions presented on each surveypage

Copyright © Millisecond Software. All rights reserved.
Contact | Terms of Service | Security Statement | Employment