Both liberals and conservatives accuse their political opponents of partisan bias, but is there e... more Both liberals and conservatives accuse their political opponents of partisan bias, but is there empirical evidence that one side of the political aisle is indeed more biased than the other? To address this question, we meta-analyzed the results of 51 experimental studies, involving over 18,000 participants, that examined one form of partisan bias-the tendency to evaluate otherwise identical information more favorably when it supports one's political beliefs or allegiances than when it challenges those beliefs or allegiances. Based on previous literature, two hypotheses were tested: an asymmetry hypothesis (predicting greater partisan bias in conservatives than liberals) and a symmetry hypothesis (predicting equal levels of partisan bias in liberals and conservatives). Mean overall partisan bias was robust (r = .245) and there was strong support for the symmetry hypothesis: liberals (r = .235) and conservatives (r = .255) showed no difference in mean levels of bias across studies. Moderator analyses reveal this pattern to be consistent across a number of different methodological variations and political topics. Implications of the current findings for the ongoing ideological symmetry debate, and the role of partisan bias in scientific discourse and political conflict are discussed.
We review recent research in moral psychology that demonstrates a fundamental human motivation fo... more We review recent research in moral psychology that demonstrates a fundamental human motivation for a morally coherent world, that is, a world in which the moral qualities of actors and actions match the moral qualities of the outcomes they produce. The striving for moral coherence explains many seemingly contradictory patterns of judgment found in the moral reasoning literature, such as the general tendency for people to reverse engineer descriptive beliefs to fit desired prescriptive conclusions. Many recent phenomena in the moral reasoning literature demonstrate coherence-based reasoning, among them, the construction of morally culpable agents, the construction of victims and harms, and altered beliefs about the effectiveness and consequences of policies with moral implications.
Punishing wrongdoers is beneficial for group functioning, but can harm individual well-being. Bui... more Punishing wrongdoers is beneficial for group functioning, but can harm individual well-being. Building on research demonstrating that punitive motives underlie free will beliefs, we propose that free will beliefs help justify punitive impulses, thus alleviating the associated distress. In Study 1, trait-level punitiveness predicted heightened levels of anxiety only for free will skeptics. Study 2 found that higher state-level incarceration rates predicted higher mental health issue rates, only in states with citizens relatively skeptical about free will. In Study 3, participants who punished an unfair partner experienced greater distress than non-punishers, only when their partner did not have free choice. Studies 4 and 5 confirmed experimentally that punitive desires led to greater anxiety only when free will beliefs were undermined by an anti-free will argument. These results suggest that believing in free will permits holding immoral actors morally responsible, thus justifying pu...
Baron and Jost (this issue, p. 292) present three critiques of our meta-analysis demonstrating si... more Baron and Jost (this issue, p. 292) present three critiques of our meta-analysis demonstrating similar levels of partisan bias in liberals and conservatives: (a) that the studies we examined were biased toward finding symmetrical bias among liberals and conservatives, (b) that the studies we examined do not measure partisan bias but rather rational Bayesian updating, and (c) that social psychology is not biased in favor of liberals but rather toward creating false equivalencies. We respond in turn that (a) the included studies covered a wide variety of issues at the core of contemporary political conflict and fairly compared bias by establishing conditions under which both liberals and conservatives would have similar motivations and opportunities to demonstrate bias; (b) we carefully selected studies that were least vulnerable to Bayesian counterexplanation, and most scientists and laypeople consider these studies demonstrations of bias; and (c) there is reason to be vigilant about...
The Terri Schiavo case was unique in the media attention it garnered, but the decision making cha... more The Terri Schiavo case was unique in the media attention it garnered, but the decision making challenges faced by Terri's family are common ones encountered by all families who must make choices about the use of life-sustaining medical treatment for an incapacitated loved one. This article highlights three key issues that were particularly problematic in the Schiavo case, but that represent general psychological challenges inherent to the task of surrogate decision making. The 3 central points of uncertainty, and therefore conflict, in the Schiavo case concerned: (a) the appropriate standard by which medical decisions for Terri should be made, (b) the specific nature of Terri's wishes about the use of life-sustaining medical technology, and (c) the true extent of disability and prognosis for recovery represented by Terri's medical condition. No simple remedy is possible that will resolve all of the uncertainties inherent to surrogate decision making, but some general strategies for improving the quality of end-of-life medical decisions are discussed.
The Terri Schiavo case was unique in the media attention it garnered, but the decision making cha... more The Terri Schiavo case was unique in the media attention it garnered, but the decision making challenges faced by Terri's family are common ones encountered by all families who must make choices about the use of life-sustaining medical treatment for an incapacitated loved one. This article highlights three key issues that were particularly problematic in the Schiavo case, but that represent general psychological challenges inherent to the task of surrogate decision making. The 3 central points of uncertainty, and therefore conflict, in the Schiavo case concerned: (a) the appropriate standard by which medical decisions for Terri should be made, (b) the specific nature of Terri's wishes about the use of life-sustaining medical technology, and (c) the true extent of disability and prognosis for recovery represented by Terri's medical condition. No simple remedy is possible that will resolve all of the uncertainties inherent to surrogate decision making, but some general strategies for improving the quality of end-of-life medical decisions are discussed.
This article reports two studies on a neglected aspect of common sense epidemiology: subjective e... more This article reports two studies on a neglected aspect of common sense epidemiology: subjective estimates of the prevalence of symptoms and diseases. Based on social-psychological research on the false-consensus effect, it was hypothesized that subjects who had a history of a condition would estimate its prevalence to be greater than would subjects who did not have a history of that condition. This hypothesis was supported across several different symptoms and diseases. Expertise did not confer protection from the effect. It occurred among 110 college students in Study 1 as well as among 65 practicing physicians in Study 2. In addition, college students who estimated the prevalence of a condition as relatively high rated that condition as less life-threatening than did other students, and students who had a history of a condition rated it as less life-threatening than did their counterparts without such a history. The discussion focuses on (a) explanations of differences in prevalence estimates as a function of personal health history, (b) implications for laypersons' judgments of seriousness, their emotional reactions to illness threats, and their illness behavior, and (c) implications for physicians' diagnostic behavior.
The current studies examined if cultural and self-construal differences in self-enhancement exten... more The current studies examined if cultural and self-construal differences in self-enhancement extended to defensive responses to health threats. Responses to fictitious medical diagnoses were compared between Asian-Americans and European-North Americans in experiment 1 and between Canadians primed with an interdependent versus an independent self-construal in experiment 3. In experiment 2, the responses of Chinese and Canadians who were either heavy or light soft drink consumers were assessed after reading an article linking soft drink consumption to insulin resistance. The primary-dependent measure reflected participants' defensiveness about threatening versus nonthreatening health information. In experiment 1, all participants responded more defensively to an unfavourable than a favourable diagnosis; however, Asian-Americans responded less defensively than did European-North Americans. In experiment 2, all high soft drink consumers were less convinced by the threatening informat...
Research suggesting that political conservatives are happier than political liberals has relied e... more Research suggesting that political conservatives are happier than political liberals has relied exclusively on self-report measures of subjective well-being. We show that this finding is fully mediated by conservatives' self-enhancing style of self-report (study 1; N = 1433) and then describe three studies drawing from "big data" sources to assess liberal-conservative differences in happiness-related behavior (studies 2 to 4; N = 4936). Relative to conservatives, liberals more frequently used positive emotional language in their speech and smiled more intensely and genuinely in photographs. Our results were consistent across large samples of online survey takers, U.S. politicians, Twitter users, and LinkedIn users. Our findings illustrate the nuanced relationship between political ideology, self-enhancement, and happiness and illuminate the contradictory ways that happiness differences can manifest across behavior and self-reports. SCIENCE sciencemag.org 13 MARCH 2015 • VOL 347 ISSUE 6227
Instructional advance directives are widely advocated as a means of preserving patient self-deter... more Instructional advance directives are widely advocated as a means of preserving patient self-determination at the end of life based on the assumption that they improve surrogates' understanding of patients' life-sustaining treatment wishes. However, no research has examined whether instructional directives are effective in improving the accuracy of surrogate decisions. A total of 401 outpatients aged 65 years or older and their self-designated surrogate decision makers (62% spouses, 29% children) were randomized to 1 of 5 experimental conditions. In the control condition, surrogates predicted patients' preferences for 4 life-sustaining medical treatments in 9 illness scenarios without the benefit of a patient-completed advance directive. Accuracy in this condition was compared with that in 4 intervention conditions in which surrogates made predictions after reviewing either a scenario-based or a value-based directive completed by the patient and either discussing or not d...
Medical decision making : an international journal of the Society for Medical Decision Making
The purpose of this study was to compare the accuracy of an actuarial method of predicting patien... more The purpose of this study was to compare the accuracy of an actuarial method of predicting patients' preferences for life-sustaining treatment with the accuracy of surrogate decision makers. 401 outpatients 65 years old or older (mean = 73 years) and their self-designated surrogate decision makers recorded preferences for four life-sustaining medical treatments in nine hypothetical illness scenarios. The surrogates did not predict the patients' preferences more accurately than did an actuarial model using modal preferences. Surrogates' accuracy was not influenced by the use of an advance directive (AD) or discussion of life-sustaining treatment choices. In clinical practice, an actuarial model could assist surrogate decision makers when a patient has no AD, an AD is unavailable, a patient's AD is vague or describes treatment choices for only extreme or unlikely disease states, no proxy decision maker has been designated, or a patient was never competent.
Research has shown that physicians are poor predictors of patients' life-sustaining treatment... more Research has shown that physicians are poor predictors of patients' life-sustaining treatment preferences. Our study examined the association between three aspects of physician experience and their ability to accurately predict patients' preferences for two different life-sustaining treatments in the event of two serious medical conditions. Seventeen physicians predicted the treatment preferences of 57 patients and then interviewed patients regarding their actual treatment preferences. Physicians' professional experience, length of their relationship with the patient, and experience with direct feedback were measured to determine the association of these factors with the accuracy of the physicians' predictions. Physicians became more accurate predictors as they interviewed more patients and received direct feedback regarding the accuracy of their predictions (P < .001). Residents were more accurate than faculty in predicting patients' preferences (P < .05)....
The Journal of the American Board of Family Practice / American Board of Family Practice
Little is known about the emotional impact of physician-initiated advance directive discussions. ... more Little is known about the emotional impact of physician-initiated advance directive discussions. One hundred ambulatory patients aged 65 years and older were randomly assigned to receive either a physician-initiated discussion of advance directive choices of a discussion of health promotion issues. Prediscussion, immediate postdiscussion, and 1-week postdiscussion measures of positive and negative affect were measured for both groups. Neither discussion topic resulted in adverse emotional or attitudinal responses. Only the advance directive participants showed positive affective and attitudinal responses to the discussion, including an increase in positive affect, an increased sense of physician-patient understanding, and increased thought and discussion about life-support issues in the week following the discussion. For those participants receiving the advance directive discussion, longer physician-patient relationships and higher educational levels significantly predicted a more p...
To examine elderly outpatients' understanding of advance directives (ADs), cardiopulmonary re... more To examine elderly outpatients' understanding of advance directives (ADs), cardiopulmonary resuscitation (CPR), and artificial nutrition and hydration (ANH) with and without the benefit of a physician-initiated discussion. Randomized controlled trial. University-affiliated, community-based, urban family practice residency training program. One hundred patients aged 65 and older, consecutively sampled and randomly assigned to one of two discussion groups. Physicians' discussions based on a prepared script consisting of AD issues or health promotion issues. Test of comprehension of AD, CPR, and ANH information, using open-ended and yes-or-no questions. Patients in the AD and health promotion discussion groups showed good basic understanding. Younger and better-educated patients had a better working knowledge of AD-related information. Understanding of ADs was higher when the physician spent more time talking about AD-related issues after the discussion was completed. Many elde...
Both liberals and conservatives accuse their political opponents of partisan bias, but is there e... more Both liberals and conservatives accuse their political opponents of partisan bias, but is there empirical evidence that one side of the political aisle is indeed more biased than the other? To address this question, we meta-analyzed the results of 51 experimental studies, involving over 18,000 participants, that examined one form of partisan bias-the tendency to evaluate otherwise identical information more favorably when it supports one's political beliefs or allegiances than when it challenges those beliefs or allegiances. Based on previous literature, two hypotheses were tested: an asymmetry hypothesis (predicting greater partisan bias in conservatives than liberals) and a symmetry hypothesis (predicting equal levels of partisan bias in liberals and conservatives). Mean overall partisan bias was robust (r = .245) and there was strong support for the symmetry hypothesis: liberals (r = .235) and conservatives (r = .255) showed no difference in mean levels of bias across studies. Moderator analyses reveal this pattern to be consistent across a number of different methodological variations and political topics. Implications of the current findings for the ongoing ideological symmetry debate, and the role of partisan bias in scientific discourse and political conflict are discussed.
We review recent research in moral psychology that demonstrates a fundamental human motivation fo... more We review recent research in moral psychology that demonstrates a fundamental human motivation for a morally coherent world, that is, a world in which the moral qualities of actors and actions match the moral qualities of the outcomes they produce. The striving for moral coherence explains many seemingly contradictory patterns of judgment found in the moral reasoning literature, such as the general tendency for people to reverse engineer descriptive beliefs to fit desired prescriptive conclusions. Many recent phenomena in the moral reasoning literature demonstrate coherence-based reasoning, among them, the construction of morally culpable agents, the construction of victims and harms, and altered beliefs about the effectiveness and consequences of policies with moral implications.
Punishing wrongdoers is beneficial for group functioning, but can harm individual well-being. Bui... more Punishing wrongdoers is beneficial for group functioning, but can harm individual well-being. Building on research demonstrating that punitive motives underlie free will beliefs, we propose that free will beliefs help justify punitive impulses, thus alleviating the associated distress. In Study 1, trait-level punitiveness predicted heightened levels of anxiety only for free will skeptics. Study 2 found that higher state-level incarceration rates predicted higher mental health issue rates, only in states with citizens relatively skeptical about free will. In Study 3, participants who punished an unfair partner experienced greater distress than non-punishers, only when their partner did not have free choice. Studies 4 and 5 confirmed experimentally that punitive desires led to greater anxiety only when free will beliefs were undermined by an anti-free will argument. These results suggest that believing in free will permits holding immoral actors morally responsible, thus justifying pu...
Baron and Jost (this issue, p. 292) present three critiques of our meta-analysis demonstrating si... more Baron and Jost (this issue, p. 292) present three critiques of our meta-analysis demonstrating similar levels of partisan bias in liberals and conservatives: (a) that the studies we examined were biased toward finding symmetrical bias among liberals and conservatives, (b) that the studies we examined do not measure partisan bias but rather rational Bayesian updating, and (c) that social psychology is not biased in favor of liberals but rather toward creating false equivalencies. We respond in turn that (a) the included studies covered a wide variety of issues at the core of contemporary political conflict and fairly compared bias by establishing conditions under which both liberals and conservatives would have similar motivations and opportunities to demonstrate bias; (b) we carefully selected studies that were least vulnerable to Bayesian counterexplanation, and most scientists and laypeople consider these studies demonstrations of bias; and (c) there is reason to be vigilant about...
The Terri Schiavo case was unique in the media attention it garnered, but the decision making cha... more The Terri Schiavo case was unique in the media attention it garnered, but the decision making challenges faced by Terri's family are common ones encountered by all families who must make choices about the use of life-sustaining medical treatment for an incapacitated loved one. This article highlights three key issues that were particularly problematic in the Schiavo case, but that represent general psychological challenges inherent to the task of surrogate decision making. The 3 central points of uncertainty, and therefore conflict, in the Schiavo case concerned: (a) the appropriate standard by which medical decisions for Terri should be made, (b) the specific nature of Terri's wishes about the use of life-sustaining medical technology, and (c) the true extent of disability and prognosis for recovery represented by Terri's medical condition. No simple remedy is possible that will resolve all of the uncertainties inherent to surrogate decision making, but some general strategies for improving the quality of end-of-life medical decisions are discussed.
The Terri Schiavo case was unique in the media attention it garnered, but the decision making cha... more The Terri Schiavo case was unique in the media attention it garnered, but the decision making challenges faced by Terri's family are common ones encountered by all families who must make choices about the use of life-sustaining medical treatment for an incapacitated loved one. This article highlights three key issues that were particularly problematic in the Schiavo case, but that represent general psychological challenges inherent to the task of surrogate decision making. The 3 central points of uncertainty, and therefore conflict, in the Schiavo case concerned: (a) the appropriate standard by which medical decisions for Terri should be made, (b) the specific nature of Terri's wishes about the use of life-sustaining medical technology, and (c) the true extent of disability and prognosis for recovery represented by Terri's medical condition. No simple remedy is possible that will resolve all of the uncertainties inherent to surrogate decision making, but some general strategies for improving the quality of end-of-life medical decisions are discussed.
This article reports two studies on a neglected aspect of common sense epidemiology: subjective e... more This article reports two studies on a neglected aspect of common sense epidemiology: subjective estimates of the prevalence of symptoms and diseases. Based on social-psychological research on the false-consensus effect, it was hypothesized that subjects who had a history of a condition would estimate its prevalence to be greater than would subjects who did not have a history of that condition. This hypothesis was supported across several different symptoms and diseases. Expertise did not confer protection from the effect. It occurred among 110 college students in Study 1 as well as among 65 practicing physicians in Study 2. In addition, college students who estimated the prevalence of a condition as relatively high rated that condition as less life-threatening than did other students, and students who had a history of a condition rated it as less life-threatening than did their counterparts without such a history. The discussion focuses on (a) explanations of differences in prevalence estimates as a function of personal health history, (b) implications for laypersons&#39; judgments of seriousness, their emotional reactions to illness threats, and their illness behavior, and (c) implications for physicians&#39; diagnostic behavior.
The current studies examined if cultural and self-construal differences in self-enhancement exten... more The current studies examined if cultural and self-construal differences in self-enhancement extended to defensive responses to health threats. Responses to fictitious medical diagnoses were compared between Asian-Americans and European-North Americans in experiment 1 and between Canadians primed with an interdependent versus an independent self-construal in experiment 3. In experiment 2, the responses of Chinese and Canadians who were either heavy or light soft drink consumers were assessed after reading an article linking soft drink consumption to insulin resistance. The primary-dependent measure reflected participants' defensiveness about threatening versus nonthreatening health information. In experiment 1, all participants responded more defensively to an unfavourable than a favourable diagnosis; however, Asian-Americans responded less defensively than did European-North Americans. In experiment 2, all high soft drink consumers were less convinced by the threatening informat...
Research suggesting that political conservatives are happier than political liberals has relied e... more Research suggesting that political conservatives are happier than political liberals has relied exclusively on self-report measures of subjective well-being. We show that this finding is fully mediated by conservatives' self-enhancing style of self-report (study 1; N = 1433) and then describe three studies drawing from "big data" sources to assess liberal-conservative differences in happiness-related behavior (studies 2 to 4; N = 4936). Relative to conservatives, liberals more frequently used positive emotional language in their speech and smiled more intensely and genuinely in photographs. Our results were consistent across large samples of online survey takers, U.S. politicians, Twitter users, and LinkedIn users. Our findings illustrate the nuanced relationship between political ideology, self-enhancement, and happiness and illuminate the contradictory ways that happiness differences can manifest across behavior and self-reports. SCIENCE sciencemag.org 13 MARCH 2015 • VOL 347 ISSUE 6227
Instructional advance directives are widely advocated as a means of preserving patient self-deter... more Instructional advance directives are widely advocated as a means of preserving patient self-determination at the end of life based on the assumption that they improve surrogates' understanding of patients' life-sustaining treatment wishes. However, no research has examined whether instructional directives are effective in improving the accuracy of surrogate decisions. A total of 401 outpatients aged 65 years or older and their self-designated surrogate decision makers (62% spouses, 29% children) were randomized to 1 of 5 experimental conditions. In the control condition, surrogates predicted patients' preferences for 4 life-sustaining medical treatments in 9 illness scenarios without the benefit of a patient-completed advance directive. Accuracy in this condition was compared with that in 4 intervention conditions in which surrogates made predictions after reviewing either a scenario-based or a value-based directive completed by the patient and either discussing or not d...
Medical decision making : an international journal of the Society for Medical Decision Making
The purpose of this study was to compare the accuracy of an actuarial method of predicting patien... more The purpose of this study was to compare the accuracy of an actuarial method of predicting patients' preferences for life-sustaining treatment with the accuracy of surrogate decision makers. 401 outpatients 65 years old or older (mean = 73 years) and their self-designated surrogate decision makers recorded preferences for four life-sustaining medical treatments in nine hypothetical illness scenarios. The surrogates did not predict the patients' preferences more accurately than did an actuarial model using modal preferences. Surrogates' accuracy was not influenced by the use of an advance directive (AD) or discussion of life-sustaining treatment choices. In clinical practice, an actuarial model could assist surrogate decision makers when a patient has no AD, an AD is unavailable, a patient's AD is vague or describes treatment choices for only extreme or unlikely disease states, no proxy decision maker has been designated, or a patient was never competent.
Research has shown that physicians are poor predictors of patients' life-sustaining treatment... more Research has shown that physicians are poor predictors of patients' life-sustaining treatment preferences. Our study examined the association between three aspects of physician experience and their ability to accurately predict patients' preferences for two different life-sustaining treatments in the event of two serious medical conditions. Seventeen physicians predicted the treatment preferences of 57 patients and then interviewed patients regarding their actual treatment preferences. Physicians' professional experience, length of their relationship with the patient, and experience with direct feedback were measured to determine the association of these factors with the accuracy of the physicians' predictions. Physicians became more accurate predictors as they interviewed more patients and received direct feedback regarding the accuracy of their predictions (P < .001). Residents were more accurate than faculty in predicting patients' preferences (P < .05)....
The Journal of the American Board of Family Practice / American Board of Family Practice
Little is known about the emotional impact of physician-initiated advance directive discussions. ... more Little is known about the emotional impact of physician-initiated advance directive discussions. One hundred ambulatory patients aged 65 years and older were randomly assigned to receive either a physician-initiated discussion of advance directive choices of a discussion of health promotion issues. Prediscussion, immediate postdiscussion, and 1-week postdiscussion measures of positive and negative affect were measured for both groups. Neither discussion topic resulted in adverse emotional or attitudinal responses. Only the advance directive participants showed positive affective and attitudinal responses to the discussion, including an increase in positive affect, an increased sense of physician-patient understanding, and increased thought and discussion about life-support issues in the week following the discussion. For those participants receiving the advance directive discussion, longer physician-patient relationships and higher educational levels significantly predicted a more p...
To examine elderly outpatients' understanding of advance directives (ADs), cardiopulmonary re... more To examine elderly outpatients' understanding of advance directives (ADs), cardiopulmonary resuscitation (CPR), and artificial nutrition and hydration (ANH) with and without the benefit of a physician-initiated discussion. Randomized controlled trial. University-affiliated, community-based, urban family practice residency training program. One hundred patients aged 65 and older, consecutively sampled and randomly assigned to one of two discussion groups. Physicians' discussions based on a prepared script consisting of AD issues or health promotion issues. Test of comprehension of AD, CPR, and ANH information, using open-ended and yes-or-no questions. Patients in the AD and health promotion discussion groups showed good basic understanding. Younger and better-educated patients had a better working knowledge of AD-related information. Understanding of ADs was higher when the physician spent more time talking about AD-related issues after the discussion was completed. Many elde...
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