Behavioural Assessment Scale - BAS

Technical Manual

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

Created: January 30, 2014

Last Modified: January 01, 2025 by K. Borchert (katjab@millisecond.com), Millisecond

Script Copyright © Millisecond Software, LLC

Background

This script implements the Behavioural Assessment Scale by Ritchie & Ledesert (1991). The Behavioural Assessment Scale assesses the intellectual functioning and adaptive behaviors in patients suffering from severe dementia.

References

Ritchie, K. & Ledesert, B. (1991). The Measurement of Incapacity in the Severly Demented Elderly: The Validation of a Behavioural Assessment Scale. International Journal of Geriatric Psychiatry, 6, 217-226.

Duration

5 minutes

Description

The script presents 11 surveyPages that cover the 5 subcategories described by Ritchie & Ledesert (1991) • Language - 5 questions, • Social Integration - 5 questions, • Occupation & Orientation - 3 questions, • Physical Independence - 16 questions, • Mobility - 3 questions)

A total score (expressions.BAS_score) is calculated at the end.

Summary Data

File Name: bas_summary*.iqdat

Data Fields

NameDescription
inquisit.version Inquisit version number
computer.platform Device platform: win | mac |ios | android
computer.touch 0 = device has no touchscreen capabilities; 1 = device has touchscreen capabilities
computer.hasKeyboard 0 = no external keyboard detected; 1 = external keyboard detected
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
checkboxScore Stores the scoresum of all items presented as checkboxes
radioButtonScore Calculates subtotal scoresum from all radiobutton items
basScore Calculates the totalscore based on all items

Raw Data

File Name: bas.iqdat

Data Fields

NameDescription
date Date the session was run
time Time the session was run
subject Participant ID
group Group number
session Session number
build Inquisit version number
q*_response Response given (in assigned values)
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