Measurement Flashcards
3 Dimensional Quantities (That Can Be Measured): Hint-RTT
Repeatability
Temporal Extent
Temporal Locus
Repeatability AKA:
3 Types of Measures: Hint- CRC
Countability
Count, Rate & Celeration
Add up the behaviors or items.
- On its own is not enough information to make decisions regarding behavior change programs.
- Most useful when observation time is constant across observations.
Count
Add up the behaviors or items over time. (count/time)
- AKA: Frequency
- Used when you are recording free operants (behaviors that have discrete beginning and ending points).
- Reported as count: per sec, min, day, session, week, month or year
Rate
Count per unit of time/time (Frequency/time).
- Measure of how rates of response change over time.
- Can mean accelerate (responding is faster over time) or decelerate (responding slower over time).
- A minimum of 7 measures is recommended for ________.
- Response rate=X axis & Time in days=Y axis
Celeration
Celeration Trend Line
A straight line drawn through the graphed data representing the direction representing the direction and degree of the trend.
When the DURATION of the behavior can be measured.
Every instance of behavior occur during some amount of time.
Temporal Extent
The only type of Temporal Extent measurement:
Duration
The amount of time in which a behavior occurs.
-Use when you want to measure the amount of time of a behavior; for behaviors that occur for too long or too short a period of time; or at high rate behaviors.
Duration
2 Methods for Calculating Duration:
- ) Total Duration Per Session
2. ) Duration Per Occurrence
Cumulative amount of time a person engages in the target behavior in the total session.
To calculate: Add up all the instances of duration for the target behavior that was taken during the session; the total will give you _________________.
Total Duration Per Session
Duration of time that each instance of the behavior occurs.
Recording each instance of the target behavior.
Duration Per Occurrence
Measuring the TIME at which behavior occur.
LOCUS=POINT IN TIME
Examines when an instance of behavior occurs with respect to other events.
2 Types: Response Latency & Interresponse Time
Temporal Locus
Time between onset of a stimulus and initiation of a response.
- Should be used when you want to measure how much time occurs between an opportunity to emit a behavior and when the behavior is initiated.
Response Latency (AKA: Latency)
Amount of time that elapses between 2 consecutive instances of a response class.
- Should be used when time between responses is important.
- Often reported by mean or median and range of IRTs per session.
- Functionally related to rate of response.
Interresponse Time (IRT)
2 Derivative (based on another source) Measures:
- ) Percentage
2. ) Trials-to-Criterion
RATIO: formed by combining the same dimensional quantities, such as count.
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.
Recommended minimum observation intervals or response opportunities = 30!!!!
It is not correct to claim improvement over 100% occurred.
Percentage
- Used when you want to document the percentage of correct responses.
- Percentage does NOT have a dimensional value.
- Percentage imposes lower and upper limits on the data.
- You cannot use percentage to record proficiency or fluency.
Advantages and Disadvantages of Percentage
A measure of the number of response opportunities needed to achieve a predetermined level of performance criteria.
Can use: Count, rate, duration and latency measures to determine: ____________________
Trials-to-Criterion
Use __________________ for:
- Skills such as shoe typing, as each opportunity to tie the shoe can be considered a trial, and ___________ data are reported as the number of trials required for the learner to tie a shoe correctly.
Trials-to-Criterion
Often used to compare the relative efficiency of two or more treatments.
Useful for assessing a learner’s increasing competence in acquiring a related class of concepts.
Trials-to-Criterion
2 Definitional Measures:
- Topography
2. Magnitude
Form or shape of the response.
- Should be used when the form of the behavior is critical (e.g., gymnastics, basketball, dancing, etc.)
- Does not equal function. Can be different but still have the same function.
Topography
Malleable dimension of behaviors
Responses of varying form are shaped and selected by their consequences.
Force/intensity/severity of behavior.
Certain responses need to be emitted at specific levels of intensity.
AKA: force, intensity, severity
Magnitude
Measurement conducted in a manner such that ALL instances of the response class of interest are detected during the observation period.
Example: Event recording (i.e., rate/frequency, count) and timing (i.e., duration, IRT, latency).
Continuous Measurement Procedures
Useful for behaviors that:
- Are free operant
- Have a discrete beginning and ending
- Require minimal displacement of the organism in time/space
- Can be emitted at any time
- Do not require much time for completion
Advantages of Continuous Measurement Procedures
Not useful for behaviors that:
- Occur at high rates.
- Are measured via discrete trials.
- Occur for extended periods of time.
- Are opportunity-based.
Disadvantages of Continuous Measurements Procedures
Measurement conducted in a manner such that SOME instances of the response class of interest may NOT be detected.
Example: Time sampling methods/interval recording methods (i.e., whole interval, partial interval, and momentary time sampling)
Discontinuous Measurement Procedures
Useful for behaviors that:
- Occur at high rates.
- Occur for long durations of time.
- Are measured via discrete trials.
- Are measured via percentage.
Advantages of Discontinuous Measurement Procedures
Not useful for behaviors that:
- Are free operant.
- It is important to obtain every occurrence of that behavior.
- Require constant attending by observer.
Disadvantages of Discontinuous Measurement Procedures
3 Procedures for Measuring Behavior:
HINT-ETT
- Event Recording (continuous measurement)
- Timing (continuous measurement)
- Time Sampling (DIScontinuous measurement)
Methods to record the number of times a response occurs.
Devices used: Pencil & paper, wrist counters, hand tally, digital counters, masking tape, pennies, buttons, calculators, etc.
Event Recording
- Fairly accurate method.
- Simple to implement; you can do this while engaging in other activities.
- Great to use with free operant (each response has a discrete beginning and end).
Advantages of Event Recording
DO NOT USE WHEN:
- Responses occur at very high rates (e.g., hand-flapping, etc.) continuous behavior (e.g., on task behavior, humming, etc.) and/or DTT data.
Disadvantages of Event Recording
Methods used to measure:
- Duration
- Response Latency
- Interresponse Time (IRT)
- Timing device: Stopwatch
Timing
AKA: Interval Recording; Discontinuous Measurement Systems
- Variety of methods for recording behavior during intervals or at specific moments in time.
- Gives us an approximation of the actual instances of behavior.
Time Sampling
How to Design and Implement Time Sampling Procedures:
First, divide the observation period into equal intervals of time.
Next, record the presence or absence of behavior within or at the end of each interval.
Great for recording continuous and/or high rate behaviors.
Advantages of Time Sampling Procedures
Do NOT use when you want to record certain important, but fairly infrequent behaviors.
Disadvantages of Time Sampling Procedures
Behaviors that do NOT have a clear beginning and ending (i.e., they are NOT discrete)
Counting each response or measuring its duration would be too hard.
Ex. Cooperative Play, humming, shouting, sucking thumb, rocking back and forth; etc.
USE DISCONTINUOUS MEASUREMENTS TO RECORD THESE BEHAVIORS
Continuous Behaviors
3 Forms of Time Sampling: WPM
- Whole Interval Recording
- Partial Interval Recording
- Momentary Time Sampling