QABF Assessment Tool - Professional Edition

Welcome to the QABF Assessment Tool

About This Assessment

The QABF is a standardized tool to identify the function(s) maintaining behaviour of concern. It consists of 25 items rated on a 0-3 scale across five behavioral functions: Attention, Escape, Non-Social, Physical, and Tangible.

Before You Begin:

Identify one specific behavior to assess (e.g., "hand biting", "screaming", "property destruction")
Complete separate assessments for different behaviors
Base ratings on actual observations, not assumptions
Consider recent patterns (last 1-2 weeks)
Allow approximately 15-20 minutes to complete

Participant Information

Participant Name *

Target Behavior to be Assessed *

Specify one observable behavior. This assessment is only valid for a single behavior topography.

Behavioral Description (Optional)

Provide additional context that may help with interpretation

NDIS Number

Date of Assessment *

Informant Name *

The person who has observed the behavior and is completing this assessment

Informant Role *

Location *

Primary setting where the behavior occurs

Practitioner Name *

Behaviour Support Practitioner coordinating this assessment

Practitioner Email (Optional)

If provided, the 'Email Results' button will auto-populate this address

Rating Guide: For each item, select how often the behavior occurs in the described situation. Progress is automatically saved.

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Assessment Results

Function Scores

Function	Score (out of 15)	Percentage	Interpretation

Visual Analysis

Radar Chart - Function Profile

Bar Chart - Score Distribution

Interpretation Guide

High (≥66.7%): Strong indication this function maintains the behaviour
Moderate (33.3-66.6%): Possible contributing function
Low (<33.3%): Unlikely to be maintaining the behaviour

Radar Chart Interpretation: The "shape" of the radar chart shows whether behavior is singly maintained (one dominant peak) or multiply maintained (multiple elevated scores). This helps guide multi-component intervention strategies.

Reference: Paclawskyj, T.R., Matson, J.L., Rush, K.S., Smalls, Y., & Vollmer, T.R. (2000). Questions About Behavioral Function (QABF): A behavior checklist for functional assessment of aberrant behavior. Research in Developmental Disabilities, 21, 223-229.