Trial-by-trial data
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Trial-by-trial data records the student's response on every teaching trial in a session, usually as correct, incorrect or prompted.
Topic: Measurement and data collection
In plain terms
In structured teaching, each trial has a cue, the student's response and feedback. Trial-by-trial data marks the outcome of each one, and the session score is the percent correct or independent. It gives a detailed picture of learning, though it takes time. Many teams switch to first-trial or probe data once a skill is emerging, to save time.
How it shows up in an IEP
Goals measured this way state the number of trials and the criterion: "will identify the named coin in 8 of 10 trials across 3 sessions." Recording the prompt level for each trial also shows whether prompts are fading.
Example
An SLP gives 10 trials of a /k/ sound in words and marks each as correct, incorrect or prompted. The student scores 6 independent correct, 2 prompted and 2 incorrect.
Related terms
- Percent accuracyPercent accuracy is the number of correct responses divided by the total number of responses or items, multiplied by 100.
- Opportunity-based dataOpportunity-based data records whether a student used a skill each time a natural chance to use it came up, reported as a fraction or percent.
- ProbeA probe is a brief check of a skill, given without teaching or help, to see what the student can do independently at that moment.
- Prompt hierarchyA prompt hierarchy is an ordered list of support levels, from most to least help or the reverse, used to teach a skill and record independence.
- Data sheetA data sheet is a form for recording a student's performance on an IEP goal in a consistent way each session.
On IEP Atlas
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