C-03 Measure Occurrence (e.g., Count, Frequency, Rate, Percentage) - Part 2 - Event Recording & Percent Occurrence

Every day after dinner, a child is to put his plate in the sink. Which formula calculates percent of occurrences?

# of times plate was put in the sink divided by # of dinners (x 100)

Event recording is not appropriate for measuring responses that

(all of the above) - 1. vary widely in duration 2. occur so rapidly that observers cannot keep pace with recording every instance 3. do not have a clear and distinct onset and offset

During a 10-minute observation, the first instance of SIB occurred 1 second after the staff request. Instances did not occur after the second, third, and fourth request. Each instance of SIB lasted 25 seconds. What was the percent of SIB occurrence given a staff request?

25%

Use percent of occurrences only if there is a minimum of ________ opportunities.

30

During a 4-minute observation, the first instance of SIB occurred 1 second after the staff request. The second instance occurred 1 second after another staff request. Instances did not occur after the third and fourth request. Each instance of SIB lasted 25 seconds. What is the percent of SIB occurrence given a staff request?

50%

So that frequency measures can be meaningfully compared across observation sessions when the target response is opportunity-bound or trial-bound (i.e., the response can't meaningfully occur in the absence of a specified stimulus), frequency measures should

be converted to percent of opportunities to respond.

So that frequency measures can be meaningfully compared across observation sessions when the duration of observation sessions varies, frequency measures should

be converted to response rate.

Event recording would NOT be appropriate for measuring which of the following behaviors?

crying

A student is to increase the amount of time he interacts with peers. The best measure is

duration.

Event recording is best suited to the measurement of responses that

have a discrete beginning and end.

Event recording is a useful measure when the goal of an intervention is to

increase or decrease the number of times a target behavior occurs.

Percent of occurrences based on too few opportunities yields

over- or under-estimated results.

Event recording is most likely to be appropriate for measuring which of the following behaviors?

self-injurious head banging

Continuous recording procedures involve recording

the occurrence of all instances of a target behavior.

Event recording is a frequency measure also referred to as

the tally method.