Table 1.
Study 1 and Study 2 statistical test results.
| Effect | F | df | p | ƞp2 |
|---|---|---|---|---|
| Study 1 | ||||
| Credibility | ||||
| Familiarity | 1.09 | 196 | .17 | .01 |
| Witness type | 0.21 | 196 | .65 | .001 |
| Familiarity × Witness type* | 5.20 | 196 | .02 | .03 |
| Honesty | ||||
| Familiarity | 0.70 | 196 | .41 | .004 |
| Witness type | 3.45 | 196 | .07 | .07 |
| Familiarity × Witness Type* | 5.94 | 196 | .02 | .03 |
| Accuracy | ||||
| Familiarity | 1.95 | 196 | .17 | .01 |
| Witness type | 1.43 | 196 | .23 | .007 |
| Familiarity × Witness Type | 0.64 | 196 | .42 | .003 |
| Believability | ||||
| Familiarity | 0.83 | 196 | .37 | .004 |
| Witness type* | 3.79 | 196 | .05 | .02 |
| Familiarity × Witness Type* | 7.64 | 196 | .006 | .04 |
| Reliability | ||||
| Familiarity | 2.79 | 196 | .10 | .02 |
| Witness type | 0.46 | 196 | .50 | .002 |
| Familiarity × Witness Type | 1.00 | 196 | .32 | .005 |
| Likelihood of guilt | ||||
| Familiarity | 0.16 | 196 | .69 | .001 |
| Witness type | 0.49 | 196 | .48 | .003 |
| Familiarity × Witness Type | 0.14 | 196 | .71 | .001 |
| Verdict confidence: acquit | ||||
| Familiarity | 2.61 | 156 | .11 | .02 |
| Witness type | 1.75 | 156 | .19 | .01 |
| Familiarity × Witness Type | 3.26 | 156 | .07 | .02 |
| Verdict confidence: convict | ||||
| Familiarity | 0.81 | 36 | .38 | .02 |
| Witness type | 0.28 | 36 | .60 | .01 |
| Familiarity × Witness Type | 0.10 | 36 | .76 | .003 |
| Study 2 | ||||
| Credibility | ||||
| Familiarity | 0.75 | 304 | .47 | .005 |
| Witness type* | 5.75 | 304 | .02 | .02 |
| Familiarity × Witness Type | 0.14 | 304 | .87 | .001 |
| Honesty | ||||
| Familiarity | 0.22 | 304 | .80 | .001 |
| Witness type | 3.17 | 304 | .09 | .01 |
| Familiarity × Witness Type | 0.31 | 304 | .73 | .002 |
| Accuracy | ||||
| Familiarity | 1.212 | 304 | .33 | .07 |
| Witness type | 0.62 | 304 | .43 | .002 |
| Familiarity × Witness Type | 1.53 | 304 | .22 | .01 |
| Believability | ||||
| Familiarity | 0.53 | 304 | .59 | .003 |
| Witness type* | 6.54 | 304 | .01 | .02 |
| Familiarity × Witness Type | 0.62 | 304 | .54 | .004 |
| Reliability | ||||
| Familiarity* | 3.42 | 304 | .03 | .02 |
| Witness type | 1.25 | 304 | .27 | .004 |
| Familiarity × Witness Type | 1.05 | 304 | .35 | .007 |
| Likelihood of guilt | ||||
| Familiarity | 2.26 | 304 | .12 | .02 |
| Witness type | 0.57 | 304 | .45 | .002 |
| Familiarity × Witness Type | 0.37 | 304 | .69 | .003 |
| Verdict confidence | ||||
| Familiarity | 1.19 | 229 | .31 | .01 |
| Witness type | 2.00 | 229 | .16 | .01 |
| Familiarity × Witness Type | 0.27 | 229 | .77 | .002 |
| Verdict confidence: convict | ||||
| Familiarity | 1.18 | 69 | .31 | . 03 |
| Witness type | 0.19 | 69 | .67 | .003 |
| Familiarity × Witness Type | 0.42 | 69 | .66 | .01 |
*p < .05.