| Literature DB >> 34111148 |
Melissa de Vel-Palumbo1, Chelsea Schein2, Rose Ferguson3, Melissa Xue-Ling Chang4, Brock Bastian5.
Abstract
Defendants can deny they have agency, and thus responsibility, for a crime by using a defense of mental impairment. We argue that although this strategy may help defendants evade blame, it may carry longer-term social costs, as lay people's perceptions of a person's agency might determine some of the moral rights they grant them. In this registered report protocol, we seek to expand upon preliminary findings from two pilot studies to examine how and why those using the defense of mental impairment are seen as less deserving of certain rights. The proposed study uses a hypothetical vignette design, varying the type of mental impairment, type of crime, and type of sentence. Our design for the registered study improves on various aspects of our pilot studies and aims to rigorously test the reliability and credibility of our model. The findings have implications for defendants claiming reduced agency through legal defenses, as well as for the broader study of moral rights and mind perception.Entities:
Mesh:
Year: 2021 PMID: 34111148 PMCID: PMC8192116 DOI: 10.1371/journal.pone.0252586
Source DB: PubMed Journal: PLoS One ISSN: 1932-6203 Impact factor: 3.752
Fig 1Models of the effects of using the defense of mental impairment on (a) responsibility; and (b) rights.
Fig 2Perceived agency of defendant across experimental conditions (+/- 2 SE).
Descriptive and t-test statistics for dependent variables at trial (Study 1).
| Dependent variable | Control ( | MI ( | df | |||
| Responsibility | 4.86 (0.44) | 3.56 (1.23) | 9.05 | 100.45 | < .001 | 1.41 |
| Blame | 4.76 (0.59) | 3.23 (1.02) | 11.75 | 128.69 | < .001 | 1.84 |
| Punitiveness | 4.13 (0.82) | 3.11 (0.92) | 7.58 | 166 | < .001 | 1.17 |
| Years detained | 11.19 (13.53) | 8.26 (10.94) | 1.52 | 164 | .129 | 0.24 |
| General moral agency | 4.03 (0.81) | 2.86 (0.81) | 9.33 | 166 | < .001 | 1.44 |
| Inhibitive agency | 2.78 (1.00) | 2.80 (0.82) | 0.15 | 166 | .879 | 0.02 |
Mediation model statistics: Effects of defense of mental impairment on crime judgments via agency (Study 1).
| M→DV | IV → DV (total effect) | IV → DV (direct effect) | Indirect effect | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Outcome variable | CI99% | CI99% | CI99% | CI99% | ||||||||
| Responsibility | 0.35 | .08 | 0.14, 0.57 | -1.30 | 0.14 | -1.67, -0.93 | -0.89 | 0.17 | -1.32, -0.46 | -0.41 | 0.11 | -0.76, -0.16 |
| Blame | 0.42 | 0.07 | 0.23, 0.61 | -1.52 | 0.13 | -1.86, -1.19 | -1.04 | 0.15 | -1.42, -0.66 | -0.49 | 0.10 | -0.80, -0.25 |
| Punitiveness | 0.29 | 0.08 | 0.08, 0.50 | -1.02 | 0.13 | -1.37, -0.67 | -0.67 | 0.16 | -1.09, -0.26 | -0.34 | 0.10 | -0.64, -0.11 |
| Years detained | 0.89 | 1.20 | -2.24, 4.03 | -2.92 | 1.92 | -7.92, 2.08 | -1.88 | 2.38 | -8.09, 4.33 | -1.04 | 1.61 | -5.38, 3.25 |
Condition variable coded as control = 0, MI = 1.
Descriptive and t-test statistics for dependent variables after release (Study 1).
| Dependent variable | Control ( | MI ( | df | |||
|---|---|---|---|---|---|---|
| General moral agency | 3.86 (0.70) | 2.99 (0.69) | 8.12 | 166 | < .001 | 1.25 |
| Inhibitive agency | 2.96 (0.89) | 2.50 (0.78) | 3.56 | 166 | < .001 | 0.55 |
| Dangerousness | 3.83 (0.91) | 4.40 (0.88) | -4.11 | 166 | < .001 | -0.64 |
| Moral standing | 3.81 (1.02) | 4.06 (0.87) | -1.66 | 166 | .098 | -0.26 |
| Services | 2.64 (1.18) | 3.05 (1.20) | -2.24 | 166 | .026 | -0.34 |
| Rights as citizen | 3.89 (0.99) | 3.39 (1.14) | 3.02 | 166 | .003 | 0.49 |
Fig 3Indirect effect model of using the defense of mental impairment on rights as citizen, via inhibitive agency and dangerousness.
Path values are expressed in unstandardized coefficients.
Descriptive and t-test statistics for dependent variables at trial (Study 2).
| Dependent variable | Control ( | MI ( | df | |||
|---|---|---|---|---|---|---|
| Responsibility | 4.71 (0.66) | 3.52 (1.22) | 9.57 | 186.99 | < .001 | 1.21 |
| Blame | 4.63 (0.76) | 3.42 (1.17) | 9.63 | 208.06 | < .001 | 1.23 |
| Punitiveness | 4.15 (0.80) | 3.24 (1.10) | 7.43 | 223.61 | < .001 | 0.94 |
| Years detained | 13.47 (13.61) | 15.55 (22.99) | -0.85 | 185.91 | .391 | -0.11 |
| General moral agency | 3.56 (1.05) | 2.75 (0.99) | 6.23 | 246 | < .001 | 0.79 |
Mediation model statistics: Effects of defense of mental impairment on crime judgments via agency (Study 2).
| M→DV | IV → DV (total effect) | IV → DV (direct effect) | Indirect effect | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Outcome variable | CI99% | CI99% | CI99% | CI99% | ||||||||
| Responsibility | 0.22 | 0.06 | 0.07, 0.38 | -1.19 | 0.12 | -1.51, -0.87 | -1.01 | 0.13 | -1.35, -0.67 | -0.18 | 0.06 | -0.37, -0.06 |
| Blame | 0.21 | 0.06 | 0.05, 0.37 | -1.21 | 0.13 | -1.53, -0.88 | -1.04 | 0.13 | -1.38, -0.70 | -0.17 | 0.06 | -0.36, -0.04 |
| Punitiveness | 0.21 | 0.06 | 0.06, 0.36 | -0.91 | 0.12 | -1.22, -0.59 | -0.74 | 0.13 | -1.07, -0.41 | -0.17 | 0.06 | -0.36, -0.04 |
| Years detained | 0.86 | 1.17 | -2.19, 3.91 | 2.07 | 2.41 | -4.19, 8.33 | 2.76 | 2.59 | -3.97, 9.49 | -0.69 | 1.03 | -3.36, 2.29 |
Condition variable coded as control = 0, MI = 1.
Descriptive and inferential statistics for dependent variables after release (Study 2).
| Dependent variable | Control ( | MI recovered ( | MI unrecovered ( | df | ||
|---|---|---|---|---|---|---|
| Inhibitive agency | 3.55 (1.02) | 3.42 (0.93) | 2.70 (0.95) | 24.22 | 2, 330 | < .001 |
| Dangerousness | 3.62 (0.89) | 3.78 (0.84) | 4.37 (0.83) | 22.95 | 2, 330 | < .001 |
| Moral standing | 4.01 (0.76) | 4.19 (0.74) | 3.97 (0.86) | 2.61 | 2, 330 | .08 |
| Services | 2.76 (1.27) | 3.01 (1.12) | 2.79 (1.21) | 1.42 | 2, 330 | .243 |
| Rights as citizen | 3.93 (0.99) | 3.89 (0.97) | 3.48 (1.14) | 6.20 | 2, 330 | .002 |
aControl different to MI unrecovered (p < .05).
bMI recovered different to MI unrecovered (p < .05).
Fig 4Means scores for rights as citizen measure (+/- 2 SE).
Mediation model statistics: Effects of recovered agency on rights via dangerousness (Study 2).
| M→DV | IV → DV (total effect) | IV → DV (direct effect) | Indirect effect | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Outcome variable | CI99% | CI99% | CI99% | CI99% | ||||||||
| Moral standing | -0.36 | 0.06 | -0.51, -0.20 | 0.23 | 0.11 | -0.05, 0.51 | 0.02 | 0.11 | -0.26, 0.29 | 0.21 | 0.06 | 0.09, 0.40 |
| Services | -0.45 | 0.09 | -0.68, -0.21 | 0.21 | 0.16 | -0.20, 0.62 | -0.05 | 0.16 | -0.47, 0.36 | 0.26 | 0.08 | 0.10, 0.53 |
| Rights as citizen | -0.63 | 0.07 | -0.82, -0.43 | 0.41 | 0.14 | 0.04, 0.78 | 0.04 | 0.13 | -0.30, 0.38 | 0.37 | 0.09 | 0.17, 0.65 |
Note. Condition variable coded as MI unrecovered = 0, MI recovered = 1.
Fig 5Indirect effect model that will be tested in the registered study.