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Observation

Observation. Defining Behavior page 192. Topography Function Characteristics Duration Latency Frequency Amplitude. Duration. Length of time a behavior lasts Total Duration: Divide total occurrence by the length of the observation.

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Observation

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  1. Observation

  2. Defining Behavior page 192 • Topography • Function • Characteristics • Duration • Latency • Frequency • Amplitude

  3. Duration • Length of time a behavior lasts • Total Duration: Divide total occurrence by the length of the observation. Example in a 30 minute observation is the student is out of seat for 16 minutes then total occurrence is 16/30=.53

  4. Latency • Length of time between signal to perform and beginning of the behavior • Behavior must have a discrete beginning • Situations for using

  5. Frequency • How often behaviors occur • Calculate as rate: 3 episodes in 15 min • When not to use: • High occurrence behaviors • Behavior occurs over prolonged period of time.

  6. Amplitude • How intense is the behavior • Objective vs. subjective descriptions of amplitude • Example: • whimpering, • sobbing, • crying, • screaming

  7. Discussion & Examples • Selecting characteristic • Context for behavior • Comparison with peers • Time sampling

  8. Whole - interval recording • Observation period is divided into intervals. • Behavior is scored if it occurs throughout the whole interval

  9. Partial - interval recording • Observation session divided into intervals • Behavior is scored if it occurs any time during that interval.

  10. Momentary Time Sampling • Observation session divided into intervals. • Behavior is scored if it occurs at the last moment of that interval.

  11. Continuous Time Sampling • Most accurate way to estimate frequency • Continuous recording for shorter observation sessions.

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