What is an ABA behavior graph?

An ABA behavior graph is a visual display of behavioral data collected over time. It typically shows sessions or days on the x-axis and a measure of behavior (frequency, duration, percentage, rate) on the y-axis. Graphs include phase change lines to mark when intervention conditions change, condition labels, data points connected by lines, and sometimes trend lines to show the direction of change.

Why do BCBAs use graphs?

Graphs are the primary tool for data-based decision making in ABA. They allow BCBAs to visually analyze whether an intervention is working by showing patterns, trends, and level changes in behavior over time. The BACB requires data-based decision making, and graphs are the standard method for presenting behavioral data in reports, publications, and supervision.

What is a phase change line?

A phase change line is a vertical dashed line on a behavior graph that indicates when a condition changed (e.g., from baseline to intervention, or from one intervention to another). Data points on either side of a phase change line are NOT connected, because they represent different conditions. Phase change lines are essential for visual analysis of treatment effects.

How do I create ABA-standard graphs?

ABA-standard graphs follow specific conventions: the x-axis shows time (sessions, days), the y-axis shows the behavioral measure, data points are connected within conditions but not across phase changes, phase change lines are vertical dashed lines, condition labels appear at the top, the y-axis starts at zero, and the graph has a clear title. This tool follows all of these conventions automatically.

What types of behavior data can I graph?

Common behavioral measures include: frequency (count of behaviors per session), rate (behaviors per unit of time), duration (how long a behavior lasts), latency (time between instruction and response), percentage correct (correct trials divided by total trials), and interval data (percentage of intervals with behavior observed). This tool supports all of these measurement types.

ABA Behavior Data Graphing Tool

Create publication-quality behavior graphs with phase change lines, condition labels, and trend lines. Enter your data, customize your graph, and export as an image. Free for BCBAs, RBTs, and students.