Term
|
Definition
| The extent to which observed values, the data produced by measuring an event, match the true state, or true values, of the event as it exists in nature. |
|
|
Term
|
Definition
| The extent to which the researcher convinces herself and others that the data are trustworthy and deserve interpretation. |
|
|
Term
|
Definition
| Any procedure used to evaluate the accuracy of a measurement system and, when sources of error are found, to use that information to correct or improve the measuring system. |
|
|
Term
|
Definition
| Measurement conducted in a manner such that all instances of the response class(es) of interest are detected during the observation period. |
|
|
Term
|
Definition
| Occurs when the behavior that is measured is the same as the behavior that is the focus of the investigation. |
|
|
Term
| Discontinuous Measurement |
|
Definition
| Measurement conducted in a manner such that some instances of the response class(es) of interest may not be detected. |
|
|
Term
| Exact Count-Per-Interval (IOA) |
|
Definition
| The percentage of total intervals in which two observers recorded the same count. |
|
|
Term
|
Definition
| Occurs when the behavior that is measured is in some way different from the behavior of interest. |
|
|
Term
| Interobserver Agreement (IOA) |
|
Definition
| The degree to which two or more independent observers report the same observed values after measuring the same events. |
|
|
Term
|
Definition
| = (number of intervals of agreement / total number of intervals) * 100% |
|
|
Term
| Mean Count-Per-Interval IOA |
|
Definition
| The average percentage of agreement between the counts reported by two observers in a measurement period comprised of a series of smaller counting times. |
|
|
Term
| Mean Duration-Per-Occurrence IOA |
|
Definition
| Equals average percentage of agreement of the durations reported by two observers for each occurrence of the target behavior. |
|
|
Term
|
Definition
| A form of inaccurate measurement in which the data consistently overestimate or underestimate the true value of an event. |
|
|
Term
|
Definition
| An observer who is unaware of the study's purpose and/or the experimental conditions in effect during a given phase or observation period. |
|
|
Term
|
Definition
| A measure produced by an observation an measurement system. |
|
|
Term
|
Definition
| Any unintended change in the way an observer uses a measurement system over the course of an investigation that results in measurement error. |
|
|
Term
|
Definition
| Influence on the data reported by an observer that results from the observer's awareness that others are evaluating the data he reports. |
|
|
Term
|
Definition
| Refers to the consistency of measurement, specifically, the extent to which repeated measurement of the same event yields the same values. |
|
|
Term
|
Definition
IOA index recommended for behaviors that occur at low rates.
= (number of intervals of agreement) / (intervals in which either or both observers recorded occurrence) * 100% |
|
|
Term
|
Definition
| (smaller of two observers' counts / larger of counts) * 100% |
|
|
Term
|
Definition
| (shorter of two durations reported by observers / longer duration) * 100% |
|
|
Term
|
Definition
| An IOA index for discrete trial data based on comparing the observers' counts (0 or 1) |
|
|
Term
|
Definition
| A measure accepted as a quantitative description of the true state of some dimensional quantity of an event as it exists in nature. |
|
|
Term
|
Definition
IOA index recommended for behaviors that occur at high rates.
(number of intervals of agreement on non-occurrence) / (intervals in which either or both observers recorded non-occurrence) * 100% |
|
|
Term
|
Definition
| The extent to which data obtained from measurement are directly relevant to the target behavior of interest and to the reason(s) for measuring it. |
|
|
