Snaith Hamilton Pleasure Scale - SHAPS

Technical Manual

Script Author: Katja Borchert, Ph.D. (katjab@millisecond.com), Millisecond

Created: January 06, 2018

Last Modified: January 10, 2023 by K. Borchert (katjab@millisecond.com), Millisecond

Script Copyright © Millisecond Software, LLC

Background

This script implements a computerized version of the Snaith Hamilton Pleasure Scale (SHAPS) as described in:

Snaith RP, Hamilton M, Morley S, Humayan A, Hargreaves D, Trigwell P. (1995). A scale for the assessment of hedonic tone the Snaith-Hamilton Pleasure Scale. Br J Psychiatry.Jul;167(1):99-103

Duration

1.5 minutes

Overview

14 4-point Likert scale items (when scored the scale gets simplified into binary categories); self-report

Instructions

see section Editable Parameters

Summary Data

File Name: shaps_summary.iqdat' (Inquisit Lab: one data file per participant)

Data Fields

NameDescription
inquisit.version Inquisit version number
computer.platform Device platform: win | mac |ios | android
startDate Date the session was run
startTime Time the session was run
subjectId Participant ID
groupId Group number
sessionId Session number
elapsedTime Session duration in ms
completed 0 = Test was not completed
1 = Test was completed
shapsTotalScore The total score based on all simplified question scores (Range: 0-14)
strongly disagree/disagree => 1 point
strongly agree/agree => 0 point
(the lower the score the more pleasure experienced)
q1 The simplified score for question 1
strongly disagree/disagree => 1 point
strongly agree/agree => 0 point
radioButtons.q1.response Question 1 raw response
4 = strongly disagree,
3 = disagree,
2 = agree,
1 = strongly agree
(same for the remaining questions)

Raw Data

File Name: shaps.iqdat

Data Fields

NameDescription
date Date the session was run
time Time the session was run
subject, group, session With the current subject/groupnumber/session id
build Inquisit version number
q*_response Response given (in assigned values)
4 = strongly disagree, 3 = disagree, 2 = agree, 1 = strongly agree
'D' => questions with a slightly different scale
1 = "Definitely Agree", 2 = "Agree", 3 = "Disagree", 4 = "Strongly Disagree"
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)

Parameters

The procedure can be adjusted by setting the following parameters.

NameDescriptionDefault
pageInstructions The instructions that appear at the top of each surveyPage