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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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Defining behavior page 192
Defining Behavior page 192

  • Topography

  • Function

  • Characteristics

    • Duration

    • Latency

    • Frequency

    • Amplitude


Duration
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


Latency
Latency

  • Length of time between signal to perform and beginning of the behavior

  • Behavior must have a discrete beginning

  • Situations for using


Frequency
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.


Amplitude
Amplitude

  • How intense is the behavior

  • Objective vs. subjective descriptions of amplitude

  • Example:

    • whimpering,

    • sobbing,

    • crying,

    • screaming


Discussion examples
Discussion & Examples

  • Selecting characteristic

  • Context for behavior

  • Comparison with peers

  • Time sampling


Whole interval recording
Whole - interval recording

  • Observation period is divided into intervals.

  • Behavior is scored if it occurs throughout the whole interval


Partial interval recording
Partial - interval recording

  • Observation session divided into intervals

  • Behavior is scored if it occurs any time during that interval.


Momentary time sampling
Momentary Time Sampling

  • Observation session divided into intervals.

  • Behavior is scored if it occurs at the last moment of that interval.


Continuous time sampling
Continuous Time Sampling

  • Most accurate way to estimate frequency

  • Continuous recording for shorter observation sessions.


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