Bacb Task List Content Area A

Front 1

*A simple tally of the # of occurrences of a bx

Back 1

Frequency (Count)

Front 2

*The ratio of the number of responses over some period of time

Unit of measurement/cycles per unit of time

Back 2

Rate

Front 3

Total duration per session: a measure of the cumulative amount of time in which a person engages in the target behavior (Cooper, Heron, Heward, p. 79)

Duration per occurrence: a measure of the duration of time that each instance of the target behavior occurs (Cooper, Heron, Heward, p.79)

Back 3

Duration

Total duration per session

Duration per occurrence

Front 4

*A measure of temporal locus; the elapsed time from the onset of a stimulus (e.g., task, direction, cue) to the initiation of a response (Cooper, Heron, Heward p. 703)

Back 4

(Response) Latency Recording Definition

Front 5

*A measure of temporal locus; defined as the elapsed time between two successive responses

Back 5

IRT Recording Definition

Front 6

*a ratio (i.e. a proportion) formed by combining the same dimensional quantities, such as count (i.e. number/number) or time (i.e. duration/duration; latency/latency). A percentage expresses the proportional quantity of some event in terms of the number of times the event occurred per 100 opportunities that the event could have occurred. (Cooper, Heron, Heward p. 81)

*Often used to report the proportion of total correct responses

*Similar to event recording of a restricted operant; however it is converted into a percent

Pros: others understand, standardizes

Cons: you lose important information

Back 6

Percent Occurrence (Percentage)

Front 7

*The number of response opportunities needed to achieve a predetermined level of performance

*Record each opportunity to respond until the performance standard is met

Back 7

Trials to Criterion

Front 8

*A discontinuous measure in which a recording session is broken into short intervals of time (usually 10-20s).

*Observer records whether the target behavior occurred at any time during the interval. It is recorded as a nonoccurrence if it does not occur at all during the interval.

*Reported as % of intervals

*Tends to overestimate the proportion of the observation period that the behavior actually occurred

(Cooper, Heron, & Heward p.701)

Back 8

Partial Interval Recording

Front 9

*A discontinuous response measure in which a recording is broken down into short intervals of time (usually 10-20s).

*At the end of each interval, the observer records whether the target behavior occurred throughout the entire interval. It is recorded as a nonoccurrence if it occurs for less than the entire interval.

* Reported as % of intervals

*Tends to underestimate the proportion of the observation period that many behaviors actually occurred

(Cooper, Heron & Heward p. 708)

Back 9

Whole Interval Recording

Front 10

*A discontinuous response measure in which the presence or absence of behaviors are recorded at precisely timed intervals

*When the timer beeps the observer looks up briefly and records whether or not a person is engaging in the target behavior

*Reported as % time samples

(Cooper, Heron & Heward p. 699)

Back 10

Momentary Time Sampling

Front 11

*Planned Activity Check (Dole & Risley, 72)

*A variation of momentary time sampling in which the observer records whether each person in a group is engaged in the target behavior at specific points in time; provides a measure of "group behavior"

*Reported as % of individuals engaged in the behavior

(Cooper, Heron & Heward p.701)

Back 11

PLACHECK

Front 12

*The degree to which two or more independent observers report the same observed values after measuring the same events

*Usually calculated as %

*Discontinuous measures number of agreements/number of agree + disagree X 100

*Continuous measures smaller/larger X 100

*Reported as % agreement

*80% is the minimum accepted

(Cooper, Heron & Heward p.698)

Back 12

Interobserver Agreement (IOA)

Front 13

*Simple and visual format for displaying data

*Graphs are the major tool for organizing, summarizing, interpreting & communicating the results of ABA

Back 13

Graphs

Front 14

*Vertical axis represents the DV

*Horizontal axis represents a phase, condition or classification variable

*The bar graph does NOT have distinct data points representing successive response measures through time (the other 3 types of graphs do)

Back 14

Bar Graph (Histogram)

Front 15

*Lots of data to summarize for others to quickly understand (lump many individuals data together)]

*Should have very few bars displayed

*A discrete variable (male vs female, 1st grade vs kindergarten)

*Nominal scale Misuses: should not be used to display intervention data

Back 15

Uses/Misuses of Bar Graphs

Front 16

*A two-dimensional graph that shows the relative distribution of individual measures in a data set with respect to the variables depicted by the x and y axes. Data points on a scatterplot are not connected

*It provides a graphic display of data in a grid format.

*It is used to identify patterns of responding in natural settings

(Cooper, Heron & Heward p. 703)

Back 16

Scatterplot

Front 17

*Find out what differs in times when behavior occurs most vs. least (e.g. setting, activity, staff, etc.)

*Find out similarities in times when behavior occurs about the same

Back 17

Interpreting Scatter Plot Data

Front 18

*Refers to the overall direction taken by the data path

*Described in terms of their direction (increasing/accelerating) or (decreasing/decelerating) or zero (no trend)

*Degree of trend and extent of variability around the trend (gradual or steep)

*Used in predicting future measures of the behavior under unchanging conditions

*The direction and degree of trend in a series of graphically displayed data points can be visually represented w/a straight line drawn through the data

*This is called the trend line

*Usually the "best fit" line is used

(Cooper, Heron & Heward p. 707)

Back 18

Trend

Front 19

*The frequency and extent to which multiple measures of behavior yield different outcomes (stability)

*The greater the variability the greater the need for additional data

Back 19

Variability

Front 20

*Measurement procedure for obtaining a tally or count of the number of times a behavior occurs

(Cooper, Heron, Heward p. 695)

Back 20

Event Recording Definition