Table 3.
Results of two-tailed paired samples t-tests comparing the detection performance A' with regard to the placement of each threat item (in laptop vs. in bag) for each threat category (guns, IEDs, knives, others) and each condition (A–D).
| t(19) | p | d | |
|---|---|---|---|
| IEDs | |||
| A | 3.30 | <0.01 | 0.74 |
| B | 5.98 | <0.001 | 1.34 |
| C | 3.76 | <0.01 | 0.84 |
| D | 4.83 | <0.001 | 1.08 |
| KNIVES | |||
| A | −12.68 | <0.001 | −2.84 |
| B | −7.76 | <0.001 | −1.73 |
| C | −9.07 | <0.001 | −2.03 |
| D | −5.32 | <0.001 | −1.19 |
| OTHERS | |||
| A | −14.24 | <0.001 | −3.18 |
| B | −0.31 | 0.76 | −0.07 |
| C | −11.23 | <0.001 | −2.51 |
| D | −5.45 | <0.001 | −1.22 |