Perceived realism and the CSI-effect

Figures & data

Table 1. Summary of verdict decisions across conditions

Evidence type	Evidence strength	Verdict
		Guilty	Not guilty
DNA	Strong	31	14
	Weak	26	26
Eyewitness	Strong	22	28
	Weak	3	41
Fingerprint	Strong	22	22
	Weak	23	24

Table 2. Summary of hierarchical logistic regression analysis for predicting jurors’ verdicts

Predictor	b	SE	OR
Step 1
Eyewitness testimony	−1.67*	0.35	0.19
Fingerprint analysis	−0.48	0.33	0.62
Evidence strength	0.97*	0.28	2.62
Perceived realism	0.04*	0.01	1.04
Step 2
Eyewitness × Evidence strength	1.48	0.86	4.41
Fingerprint × Evidence strength	−0.73	0.63	0.48
Realism × Eyewitness	0.05	0.03	1.05
Realism × Fingerprint	−0.01	0.02	0.99
Realism × Evidence strength	0.01	0.02	1.01
Step 3
Realism × Evidence strength × Eyewitness	−0.03	0.009	0.98
Realism × Evidence strength × Fingerprint	0.07	0.05	1.07

Note: DNA and weak evidence were used as the reference groups for comparison.

* p < 0.05.

Table 3. Summary of hierarchical logistic regression analysis predicting jurors’ verdicts

Predictor	b	SE	OR
Step 1
Eyewitness testimony	−1.19*	0.35	0.31
DNA evidence	0.48	0.33	1.66
Evidence strength	0.97*	0.28	2.62
Perceived realism	0.04*	0.01	1.04
Step 2
Eyewitness × Evidence strength	2.21*	0.85	9.15
DNA Evidence × Evidence strength	0.73	0.63	2.07
Realism × Eyewitness	0.06	0.03	1.06
Realism × DNA evidence	0.01	0.02	1.01
Realism × Evidence strength	0.01	0.02	1.01
Step 3
Realism × Evidence strength × Eyewitness	−0.10	0.09	0.91
Realism × Evidence strength × DNA	−0.07	0.05	0.93

Note: Fingerprint analysis and weak evidence were used as the reference groups for comparison.

^* p < 0.05.