Flashcards in Unit 4 Deck (41)
A systematic form of data examination
characterized by visual inspection of
graphical displays of those data.
Visual data analysis
1. Taking an overview of an entire data display, noting its general characteristics.
2. Specific data inspection and analysis
The Process of Visual Analysis
To answer 2 basic questions:
1. Was there a meaningful change in behavior?
2. To what extent can the change be attributable to a specific environmental change?
The Purpose of Visual Analysis
Embedded in text
Presented in summary form (usually numerically in a data table)
Types of data display
A relatively simple visual format for displaying data that provide visual representations of relationships between a series of measurements and relevant
Equal interval line graph
Bar graph (Histogram)
Semi logarithmic graphs (standard celeration chart)
Graphic displays used in ABA
The most commonly used graph in ABA.
Based on a Cartesian plane, a two dimensional area formed by the intersection of two perpendicular lines (one vertical, one horizontal).
Equal interval line graph
(Simple line graph)
Any point within the plane of the chart represents a specific relationship between the two variables (dimensions) measured along each of the axis lines.
Describe Equal interval line graphs
Charting ABA data
To evaluate treatment effectiveness
Used in functional analyses
Common Uses of Line Graphs
The data path
Condition and phase change lines
Condition and phase change labels
Parts of an Equal Interval Line Graph
Represents the passage of time
Represents the range of values of the dependent variable
Can be marked according to the
needs of the behavior analyst as any
specified recorded observation
periods, over a period of time
Equal movements up the Y-axis represent
equal increases in the behavior; should be
expressed in whole time units
Runs from zero up to some number which is
chosen by the creator of the graph
An individually measured value of the target
behavior (the DV) at a given point in time
A series of straight lines connecting successive data points within a phase or condition.
It represents the relationship between the IV and the DV.
Represent a major change in the IV, OR
a major (usually permanent) change in the
A solid vertical line placed at a point along
the X-axis indicating the point in time that the
phase change occurred
Phase Change Lines
Represent a minor change in the IV, OR
a minor (usually temporary) change in the
A dotted vertical line placed at a point along
the X-axis indicating the point in time when
the condition changed
Condition Change Lines
States which time periods are represented
by each successive data point
X- Axis Label
States which response measure was used to
measure the dependent variable – the target
Y- Axis Label
Brief labels, placed at the top of the chart,
that identify each separate major phase of
Mark changes occurring within a phase
A concise statement that provides you with:
Sufficient information to identify the
DVs and IVs, and
Possibly other salient information necessary
to visually interpret the data.
The number of data points
4 primary graph characteristics that
contribute to visual analysis
The mean (average) value of a set of data
points, usually across an entire condition or
The overall direction taken by the data path
through a set of data points