Table 4.
Number of Participants (N), Mean Performance Levels, and Standard Errors of the Mean (SEM) for Various Measures in Experiment 2 (7-item Arrays)
| N | Mean | SEM | |
|---|---|---|---|
| Trials with no Metamemory Judgment Task | |||
| Judged changes when 0 changed | 52 | 1.31 | 0.11 |
| Judged changes when 1 changed | 52 | 1.89 | 0.08 |
| Judged changes when 2 changed | 52 | 2.33 | 0.08 |
| Judged changes when 3 changed | 52 | 2.96 | 0.11 |
| Judged changes when 4 changed | 52 | 3.36 | 0.12 |
| Judged changes when 5 changed | 52 | 3.97 | 0.10 |
| Judged changes when 6 changed | 52 | 4.32 | 0.13 |
| Judged changes when 7 changed | 52 | 4.66 | 0.14 |
| Trials with Metamemory Judgment Task | |||
| Judged Items Stored | 52 | 2.76 | 0.09 |
| Judged changes when 0 changed | 52 | 1.56 | 0.12 |
| Judged changes when 1 changed | 52 | 2.07 | 0.13 |
| Judged changes when 2 changed | 52 | 2.61 | 0.11 |
| Judged changes when 3 changed | 52 | 2.97 | 0.11 |
| Judged changes when 4 changed | 52 | 3.43 | 0.10 |
| Judged changes when 5 changed | 52 | 3.92 | 0.11 |
| Judged changes when 6 changed | 52 | 4.33 | 0.13 |
| Judged changes when 7 changed | 52 | 4.81 | 0.14 |
| Slope with storage judgment 0 | 11 | .40 | .17 |
| Slope with storage judgment 1 | 38 | .41 | .05 |
| Slope with storage judgment 2 | 50 | .41 | .04 |
| Slope with storage judgment 3 | 52 | .50 | .04 |
| Slope with storage judgment 4 | 44 | .48 | .04 |
| Slope with storage judgment 5 | 12 | .57 | .16 |
| Slope with storage judgment 6 | 4 | .67 | .22 |
| Slope with storage judgment 7 | 3 | .00 | .00 |
| Auxiliary Tasks | |||
| Operation Span Score | 52 | 41.81 | 2.34 |
| Running Span Score | 52 | 3.13 | 0.09 |
Note. Slope refers to increases in the reported number of changes in the array as a function of increases in the actual number of changes. The estimate of items in working memory based on the winning model, summed over the probabilities of different numbers of items in working memory, was 2.28. The proportions of trials with 0 through 7 items in working memory according to the model are .04, .04, .51, .40, .00, .00, .00, and .00, respectively.