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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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