Table 2.
The percentages of correct responses (Standard deviation) for each of the problems in the Deductive Reasoning test.
| Problems and statements | Correct responses | ||
|---|---|---|---|
| PROPOSITIONAL EVALUATION TASK | |||
| Conditional Inferences | DA | 35% (0.48) | |
| Inclusive Disjunctions | AC | 25% (0.44) | |
| Aff. | 69% (0.47) | ||
| Neg. | 78% (0.42) | ||
| Overall Task | 52% (0.27) | ||
| METADEDUCTIVE TRUTH-TABLE TASK | |||
| If p then no-q | p q* | 94% (0.24) | |
| If p then q | not-p q | 82% (0.39) | |
| not-p q | 24% (0.43) | ||
| Overall Task | 67% (0.20) | ||
| SYLLOGISTIC CONSTRUCTION TASK | |||
| AI-I* | 84% (0.37) | ||
| IA-N | 2% (0.14) | ||
| EI-O | 43% (0.50) | ||
| EA-O | 8% (0.27) | ||
| OO-N | 31% (0.47) | ||
| Overall Task | 34% (0.19) | ||
| METADEDUCTIVE NECESSITY/POSSIBILITY TASK | |||
| Possible | 45% (0.50) | ||
| Possible* | 90% (0.30) | ||
| Necessary* | 88% (0.33) | ||
| Overall Task | 75% (0.23) | ||
| Deductive problems | 42% (0.19) | ||
| Metadeductive problems | 71% (0.19) | ||
| Overall correct responses | 53% (0.17) | ||
*
= one model problem.