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| Frequency Measurement of Stereotypical Behavior using Inertial Measurement Unit Sensors |
| Saturday, May 23, 2015 |
| 3:00 PM–3:50 PM |
| 214A (CC) |
| Area: PRA; Domain: Applied Research |
| Chair: W. Joseph Wyatt (Marshall University) |
| Discussant: W. Joseph Wyatt (Marshall University) |
| Abstract: Following review of Skinner's discovery of the free-operant response and the resultant development of the measurement of frequency (count-per-unit-of-time), the first presentation will describe the advantages of frequency as the preferred measurement method in applied behavior analysis and compare it to other types of measurement. Ways of depicting frequency on graphs, including the Standard Celeration Chart, are also discussed and compared. In the second presentation, precise assessment of stereotypical behaviors is discussed. Because it often occurs either continuously or at high frequency, stereotypy is difficult to measure. Common units of measurement for stereotypy include percentage-of-intervals and frequency; however, even when frequency is the unit of measurement, it is likely that measurement error is high. Measurement of motor stereotypy using Inertial Measurement Unit (IMU) sensor equipment has the potential to reduce measurement error. The sensors and related software are capable of capturing and displaying real-time data related to force, duration, frequency, inter-response time, and topography of various behaviors, including motor stereotypy. The sensors collect data 300 times per minute on 19 different behavior-related variables. The precise measurement potential of this sensor equipment and related software seems ideally suited to measurement of stereotypical behavior in research studies and in applied settings. |
| Keyword(s): Assessment, Computer Technology, Inertial Measurement, Stereotypy |
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A Case for Frequency as the Preferred Measurement of Behavior |
| Robert W. Worsham (Judge Rotenberg Educational Center), NATHAN BLENKUSH (Judge Rotenberg Educational Center), Jason Coderre (Judge Rotenberg Educational Center), Nick Lowther (Judge Rotenberg Educational Center) |
| Abstract: Following review of Skinner's discovery of the free-operant response and the resultant development of the measurement of frequency (count-per-unit-of-time), the first presentation will describe the advantages of frequency as the preferred measurement method in applied behavior analysis and compare it to other types of measurement. Ways of depicting frequency on graphs, including the Standard Celeration Chart, are also discussed and compared. |
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Frequency Measurement of Stereotypical Behavior using Inertial Measurement Unit Sensors |
| ROBERT W. WORSHAM (Judge Rotenberg Educational Center) |
| Abstract: In the second presentation, precise assessment of stereotypical behaviors is discussed. Because it often occurs either continuously or at high frequency, stereotypy is difficult to measure. Common units of measurement for stereotypy include percentage-of-intervals and frequency; however, even when frequency is the unit of measurement, it is likely that measurement error is high. Measurement of motor stereotypy using Inertial Measurement Unit (IMU) sensor equipment has the potential to reduce measurement error. The sensors and related software are capable of capturing and displaying real-time data related to force, duration, frequency, inter-response time, and topography of various behaviors, including motor stereotypy. The sensors collect data 300 times per second on 19 different behavior-related variables. The precise measurement potential of this sensor equipment and related software seems ideally suited to measurement of stereotypical behavior in research studies and in applied settings. |
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