International Journal Special Education

Percent Correct (as of TA) .Percent Correct (as of TA) .Percent Correct (as of TA) .INTERNATIONAL JOURNAL OF SPECIAL EDUCATION Vol 26, No: 3, 2011Number of trials-to-criterion.Figure 1 notes the number of intervention sessions necessary to reach 100% performance level criterion.One contextual Social Story reader (Bruce) needed only one trial to reach criterion, and the remainingtwo contextual Social Story readers (Jonathan and Grant) reached 100% of criterion after two trials. Twodirective Social Story readers (Matthew and Jimmy) reached 100% of criterion after three trials, and theremaining one directive Social Story reader (Chris) did not reach 100% of criterion at all. Once reachingcriterion, all three contextual Social Story readers (Jonathan, Grant, Bruce) have maintained theirperformance at criterion level, whereas the two directive Social Story readers who reached criterion(Matthew and Jimmy) both regressed in their performances and did not maintain a stable plateauthroughout the intervention phase (Figure 1).BaselineInterventionMatthew: Place Setting (Directive Social Story)10080604020Trials to Criterion = 301 2 3 4 5 6 7Sessions (Daily)Jonathan: Place Setting (Contextual Social Story)100806040Trials to Criterion = 2 / Plateau a2001 2 3 4 5 6 7Sessions (Daily)Chris: Place Setting (Directive Social Story)1008060402001 2 3 4 5 6 7 8 9Trials to Criterion = N/A / PlateauSessions (Daily)68