Table 2. Parameter Estimates, Confidence Intervals, and G2 Goodness-of-Fit Values for the Four-Parameter Two-high Threshold MPT Model of Source Monitoring Under Different Conditions of Expectancy and Source - Item Contingency in Experiment 2.
| Item Expectancy | D | d | g | b | G2(6) |
|---|---|---|---|---|---|
| Schema-Consistent Contingency Condition | 5.48 | ||||
| Expected Doctor | .33 (.26-.40) | .98 (.67-1.00) | .79 (.73-.83) | .52 (.47-.57) | |
| Expected Lawyer | .35 (.28-.42) | .72 (.46-.99) | .18 (.13-.23) | .45 (.40-.50) | |
| Equal Expectancy | .59 (.53-.65) | .71 (.58-.85) | .57 (.49-.65) | .41 (.34-.48) | |
| Zero Contingency Condition | 7.48 | ||||
| Expected Doctor | .38 (.32-.45) | .99 (.77-1.00) | .45 (.39-.52) | .54 (.49-.59) | |
| Expected Lawyer | .41 (.34-.47) | .97 (.76-1.00) | .45 (.39-.52) | .53 (.47-.58) | |
| Equal Expectancy | .64 (.58-.69) | .93 (.81-1.00) | .56 (.48-.64) | .58 (.50-.64) | |
| Schema-Inconsistent Contingency Condition | 4.51 | ||||
| Expected Doctor | .35 (.28-.41) | .66 (.37-.95) | .24 (.19-.28) | .61 (.56-.66) | |
| Expected Lawyer | .33 (.26-.39) | .59 (.30-.87) | .78 (.73-.83) | .53 (.48-.58) | |
| Equal Expectancy | .59 (.48-.64) | .81 (.68-.95) | .56 (.49-.64) | .53 (.46-.60) | |
Notes. These are probability estimates that can range from 0 to 1. D = probability of item recognition; d = probability of remembering the source memory; g = probability of guessing that an item was presented by the doctor (estimates higher than the chance level of .5 indicate guessing bias towards doctor; estimates lower than .5 indicate guessing bias towards lawyer); b = probability of guessing that an item is old (chance level is .5). 95% confidence intervals are in parentheses. G2(6) values lower than 12.59 indicate a good fit of the model to the data.