The south beach study: Bystanders' memories are more malleable

People's reports are affected by what others say. The current study compared memory conformity effects of people who interacted with a confederate, and of bystanders to that interaction. A second goal was to observe if memory conformity occurs in a naturalistic setting. A male confederate approached a group of people at the beach and had a brief interaction. About a minute later a research assistant approached the group and administered a target‐absent lineup to each person in the group. Memory conformity was observed. Bystanders were twice as likely to conform as those who interacted with the confederate. Forensic investigators should take into consideration the role a person plays in an event when assessing eyewitness evidence. Copyright © 2010 John Wiley & Sons, Ltd.     

Field dependence and attitude change: Source credibility can alter persuasion by affecting message-relevant thinking

The present study shows that for a personally relevant counterattitudinal issue, a highly credible source can alter persuasibility by increasing a subject's message-relevant thinking. Previous failures to show this effect were probably due to the highly thoughtful nature of typical research subjects, when confronted with involving issues. In the present study, field-dependent and field-independent subjects heard convincing or refutable counterattitudinal speeches given by sources of high or low credibility. Results indicated that subjects who are typically low in differentiation of stimuli (field-dependent subjects) showed differential persuasion to strong and weak arguments only when they were presented by a highly credible source. For subjects who are typically high in propensity to differentiate stimuli (field-independent subjects), the arguments were differentially persuasive for both high and low credible sources. These results are consistent with the hypothesis that increasing source credibility can enhance message-relevant thought for subjects who typically do not scrutinize message content.     

Consistency between verbal and non-verbal affective cues: a clue to speaker credibility

Listeners are exposed to inconsistencies in communication; for example, when speakers’ words (i.e. verbal) are discrepant with their demonstrated emotions (i.e. non-verbal). Such inconsistencies introduce ambiguity, which may render a speaker to be a less credible source of information. Two experiments examined whether children make credibility discriminations based on the consistency of speakers’ affect cues. In Experiment 1, school-age children (7- to 8-year-olds) preferred to solicit information from consistent speakers (e.g. those who provided a negative statement with negative affect), over novel speakers, to a greater extent than they preferred to solicit information from inconsistent speakers (e.g. those who provided a negative statement with positive affect) over novel speakers. Preschoolers (4- to 5-year-olds) did not demonstrate this preference. Experiment 2 showed that school-age children's ratings of speakers were influenced by speakers’ affect consistency when the attribute being judged was related to information acquisition (speakers’ believability, “weird” speech), but not general characteristics (speakers’ friendliness, likeability). Together, findings suggest that school-age children are sensitive to, and use, the congruency of affect cues to determine whether individuals are credible sources of information.     

Memory Conformity for New and Old Items with Immediate and Delayed Testing

Memory conformity for images was examined using a mixed factorial design. Participants were presented with 50 images then later completed an old/new recognition test on these plus 50 fillers. Some received post‐event information (PEI) attributed to a co‐witness that was introduced either soon after the original 50 images were presented or 2 days later. The memory test was either soon after the co‐witness PEI was shown or 2 days later. When the memory test was 2 days after receiving PEI, the PEI had no effect. PEI had a large effect when presented just before testing. The memory conformity effect was largest when PEI was presented, and the when memory test was completed 2 days after the initial presentation. Memory conformity effects were larger for new items than for old when PEI immediately preceded the test. Thus, the PEI affected the false alarm rate more than the hit rate. Copyright © 2012 John Wiley & Sons, Ltd.     

Memory conformity: Disentangling the steps toward influence during a discussion

When two people see the same event and discuss it, one person’s memory report can influence what the other person subsequently claims to remember. We refer to this asmemory conformity. In the present article, two factors underlying the memory conformity effect are investigated. First, are there any characteristics of the dialogue that predict memory conformity? Second, is memory conformity differentially affected when information is encountered that omits, adds to, or contradicts originally encoded items? Participants were tested in pairs. The two members of each pair encoded slightly different versions of complex scenes and discussed them prior to an individual free recall test. The discussions were audiotaped, transcribed, and analyzed. Our most striking finding was that the witness initiating the discussion was most likely to influence the other witness’s memory report. Furthermore, witnesses were most likely to be influenced when an additional (previously unseen) item of information was encountered in the discussion.     

The effects of conformity on recognition judgements for emotional stimuli

Exposure to another’s account of a shared event can influence the content of an individual’s memory report. We examine whether the emotionality of the to-be-remembered information influences the likelihood that socially encountered post-event information is accepted into memory. Participants were exposed to positive, negative or neutral emotional pictures. Subsequently, they had to discriminate these pictures from new pictures in a ‘yes/no’ recognition decision either before or subsequent to a confederate providing misinformation, accurate or no information. Post-event information influenced participants’ responding in the recognition test. Effects were larger for participants viewing neutral items and persisted for these items on a subsequent private source monitoring test. These findings indicate that people rely more on information from others when encountering non-emotional compared to emotional items. We suggest that increased memory strength in conjunction with access to strong retrieval cues in the recognition test serves to shield emotional items from vulnerability to effects of memory conformity.     

Co‐Witness Confidence,Conformity, and Eyewitness Memory: An Examination of Normative and Informational Social Influences

We explored conformity and co‐witness confidence in eyewitness memory. Confederates provided misleading information and confidence ratings during a cued recall test, and participants publicly provided answers to this test in turn. Participants performed memory tests with a confederate, then completed individual memory tests. Results indicated that confederates who answered questions prior to participants impacted their public and private memory reports for accurate information but only impacted public reports for misleading information. Participants' confidence in their performance in the presence of a confederate mirrored the confederate's confidence levels, suggesting a confidence conformity effect. Results are explained in terms of differential effects of informational and normative influence for accuracy and confidence in co‐witness memory reports. Copyright © 2012 John Wiley & Sons, Ltd.     

Persuasive constraint and expert versus non‐expert influence in intention to quit smoking

In a 2 × 2 design, after listing important personal reasons for smoking, 70 smokers were randomly told either that they had sufficient reasons for smoking (low internal constraint to change) or that they did not have sufficient reasons (high internal constraint to change) and were exposed to an anti‐smoking message from a source with either expert (high external constraint to change) or non‐expert (low external constraint to change) status. The main dependent variable was change in intention to give up smoking. The analyses revealed the predicted interaction between external and internal constraint: High internal constraint increased non‐expert influence but not expert influence. Supplementary analysis showed that, when internal constraint was high, non‐expert influence was related to the perceived quality of the message whereas when internal constraint was low, expert influence was related to the source's perceived motivation to inform, i.e. rather than to convince. These results were predicted on the basis of the link that targets establish in social influence settings between constraints to change that are internal (i.e. related to their personal beliefs, feelings or attitudes) and those that are external (i.e. related to the characteristics of the persuasive communication such as the status of the source). Copyright © 2002 John Wiley & Sons, Ltd.     

Patient Distress Undermines the Credibility of Illness Complaints1

Two studies examined the effects of telling lay perceivers about patients' n]onmedical problems. In Study 1, college students rated a male peer's report of a sore throat as less credible and more psychologically caused when these co-occurred with non-medical problems (midterm exams or insomnia), even when diagnostic results for strep throat were positive. In Study 2, perceivers received no diagnostic information, and gender of the stimulus patient was varied systematically. The patient was rated as less credible if insomnia was mentioned in a conversation, regardless of the patient's gender. Nonmedical problems also affected which health advice perceivers gave to the patient. These findings are compared with those of previous research on credibility judgment processes, and implications are traced for lay perceivers' m]ental models of illness.     

Modelling courage: The role of dissent in fostering independence

While dissent has been construed in terms of social support and informational influence, this paper hypothesizes that exposure to dissenting minority views, even when they are wrong, stimulates resistance to conformity and increased adherence to one's own views. In this study, individuals in groups of four judged the colour of a series of blue stimuli and were exposed to one individual who consistently judged the stimuli to be ‘green: inconsistently judged them to be 'green' or expressed no dissent. In a subsequent setting, when judging a series of red slides; subjects were exposed to a majority who repeatedly judged them as 'orange’. Exposure to dissent, whether it was consistent or inconsistent, substantially reduced the level of conformity. In fact, exposure to the consistent dissent led to almost complete independence.     

Attention to Explicit and Implicit Contrast in Verb Learning

Contrast information could be useful for verb learning, but few studies have examined children's ability to use this type of information. Contrast may be useful when children are told explicitly that different verbs apply, or when they hear two different verbs in a single context. Three studies examine children's attention to different types of contrast as they learn new verbs. Study 1 shows that 3.5-year-olds can use both implicit contrast (“I'm meeking it. I'm koobing it.”) and explicit contrast (“I'm meeking it. I'm not meeking it.”) when learning a new verb, while a control group's responses did not differ from chance. Study 2 shows that even though children at this age who hear explicit contrast statements differ from a control group, they do not reliably extend a newly learned verb to events with new objects. In Study 3, children in three age groups were given both comparison and contrast information, not in blocks of trials as in past studies, but in a procedure that interleaved both cues. Results show that while 2.5-year-olds were unable to use these cues when asked to compare and contrast, by 3.5 years old, children are beginning to be able to process these cues and use them to influence their verb extensions, and by 4.5 years, children are proficient at integrating multiple cues when learning and extending new verbs. Together these studies examine children's use of contrast in verb learning, a potentially important source of information that has been rarely studied.     

Manipulating power can affect memory conformity

Memory is malleable and open to influence between encoding and retrieval. Information about a past event given to us by, for example, a co‐witness can be incorporated into our own memory reports. Pairs of participants were shown 50 photographs of faces, given a power task where one had to be a designer (low‐power) and one a judge (high‐power), and then given a recognition test where one partner had to answer before the other. The individuals in the low‐power group were more influenced by their partner's responses than those in the high‐power group. This has important forensic, educational and organisational applications and shows that memory conformity can be manipulated by power. Copyright © 2007 John Wiley & Sons, Ltd.     

Experimental Tests of Normative Group Influence and Representation Effects in Computer‐Mediated Communication

Two experiments addressed the questions of if and how normative social influence operates in anonymous computer‐mediated communication (CMC) and human‐computer interaction (HCI). In Experiment 1, a 2 (public response vs. private response) × 2 (one interactant vs. four interactants) × 3 (textbox vs. stick figure vs. animated character) mixed‐design experiment (N = 72), we investigated how conformity pressure operates in a simulated CMC setting. Each participant was asked to make a decision in hypothetical social dilemmas after being presented with a unanimous opinion by other (ostensible) participants. The experiment examined how the visual representation of interaction partners on the screen moderates this social influence process. Group conformity effects were shown to be more salient when the participant's responses were allegedly seen by others, compared to when the responses were given in private. In addition, participants attributed greater competence, social attractiveness, and trustworthiness to partners represented by anthropomorphic characters than those represented by textboxes or stick figures. Experiment 2 replicated Experiment 1, replacing interaction with a computer(s) rather than (ostensible) people, to create an interaction setting in which no normative pressure was expected to occur. The perception of interaction partner (human vs. computer) moderated the group conformity effect such that people expressed greater public agreement with human partners than with computers. No such difference was found for the private expression of opinion. As expected, the number of computer agents did not affect participants' opinions whether the responses were given in private or in public, while visual representation had a significant impact on both conformity measures and source perception variables.     

Eyewitness memory following discussion: using the MORI technique with a Western sample

Researchers studying memory conformity have made significant advances in our understanding of the phenomenon, but have used methods with significant shortcomings. Mori's three‐stage method addresses many of these concerns. To date the technique has not been replicated on a Western sample. We present such a study, and discuss two significant improvements to Mori's method. We found that subjects were more likely to report the correct answer for non‐discussed critical details than discussed critical details. Our data also suggested that when subjects agreed with their partner's information during the discussion, they did so because they thought that information was accurate; only a minority of the time did they go along with their partner during discussion and revert to their own answer at the test. We draw parallels between the unknown mechanisms driving memory conformity effects and the search for mechanisms driving the misinformation effect two decades ago. Copyright © 2007 John Wiley & Sons, Ltd.     

Swedish women's perceptions of and conformity to feminine norms

The relatively high gender equality in the Swedish society is likely to exert an influence on gender role construction. Hence, the present research aimed to investigate Swedish women's perceptions of and conformity to feminine norms. A mixed methods approach with two studies was used. In Study 1, young Swedish women’s gender role conformity, as measured by the Conformity to Feminine Norms Inventory 45 (CFNI‐45), was compared to the results from previously published studies in Canada, the United States, and Slovakia. Overall, Swedish women displayed less conformity than their foreign counterparts, with the largest difference on the subscale Sexual fidelity. In Study 2, focus group interviews with young Swedish women added a more complex picture of feminine norms in the Swedish society. For instance the results indicated that Swedish women, while living in a society with a strong gender equality discourse, are torn between the perceived need to invest in their appearances and the risk of being viewed as non‐equal when doing so. In sum, despite the fact that traditional gender roles are less pronounced in Sweden, gender role conformity is still a pressing issue. Since attending to the potential roles of feminine norms in women’s lives previously has been proposed to be useful in counseling and therapeutic work, the present research also offers valuable information for both researchers and practitioners. [Correction added on 5 May 2017, after first online publication in April 2017: An incorrect Abstract was inadvertently captured in the published article and has been corrected in this current version.]     

Weighting information from outside sources: a biased process

How do people utilize information from outside sources in their decisions? Participants observed a signal‐plus‐noise or noise‐alone event and then made a yes–no decision about whether a signal had occurred. Participants were provided with two information sources to aid decision making. Each source consisted of four components that provided estimates of signal likelihood. In Experiment 1, the two sources had equal overall accuracy but differed in the expertise and internal correlation of their components. A regression analysis indicated that participants overweighed the high‐expertise‐high‐correlation source. This bias occurred on trials when the aggregate opinions of the sources disagreed. In Experiment 2, both the overall accuracy of the source and its components were manipulated. Participants overweighed information from the higher accuracy source. These biases reflect people's sensitivity to across‐trial and within‐trial differences in the accuracy and internal consistency of information sources. Experiment 3 provided additional evidence supporting these conclusions. Copyright © 2004 John Wiley & Sons, Ltd.     

Strategies in the Information Search Process: Interaction Among Task Structure,Knowledge, and Source

The authors explored the information search strategies of 145 individuals in the predecisional stage. Decision-making participants selected pieces of information from a list including relevant and irrelevant data. The authors investigated the influence of the individual's knowledge and information source. In Experiment 1, the authors experimentally manipulated the information source reliability. The results revealed that participants tended to use a sequential strategy when the authors presented information as supplied by a reliable source. In Experiment 2, the authors analyzed the interaction between information source and the individuals' knowledge. When participants believed the source to be reliable, even knowledgeable participants adopted a strategy as sequential as that chosen by naive individuals. In Experiment 3, a mediational model corroborated the hypothesis that the search strategy affects the final judgment. The results were consistent with the constructivist framework, which emphasizes the role of individual, task, and context in the decision-making process.     

Countries Mimicking Neighbors: The Spatial Diffusion of Governmental Restrictions on Religion

Conceptualized as efforts to deny religious freedoms, previous research explains the presence of governmental restrictions on religion by isolating national governments, asserting that the primary determinant is a country's internal structural characteristics. These approaches overlook why the levels of governmental restriction on religion are spatially clustered and increasing in distinct patterns. Utilizing spatial analysis and data from the Religion and State Project, this article demonstrates that governmental restrictions on religion are spatially clustered, not independent from neighboring countries, and that increases in a country's level of restrictions reflect similar changes in bordering countries. Spatial clustering emerges through the diffusion of policies, where national governments mimic their neighbor's policies and practices even when accounting for internal structural characteristics. The article concludes that while a country's internal structure is clearly a predictor of policies, national governments are not isolated from neighbors where the level of restrictions are susceptible to external influence.     

Selective,but Only if It Is Free: Children Trust Inaccurate Individuals More when Alternative Sources Are Costly

The present research examines the effect of the costliness of an information source on children's selective learning. In three experiments (total N = 112), 4‐ to 7‐year‐olds were given the opportunity to acquire and endorse information from one of two sources. One source, a computer, was described as always accurate; the other source, a puppet, had a history of either accuracy or inaccuracy. For some children, learning from the computer required giving away stickers. The costliness of the computer clue reduced children's use of this source across all experiments, but its effect on children's use of the puppet varied based on the puppet's accuracy and the type of information learned. Children's trust in the puppet was above chance regardless of the cost of the computer when they were learning generalizable semantic information and the puppet had a history of accuracy. When the puppet was inaccurate or when children learned episodic information, the costliness of the computer significantly increased children's trust in the puppet. Hence, attaching a cost to a preferred knowledge source reduces children's selectivity and increases their trust in sources that they would not otherwise see as desirable. Copyright © 2013 John Wiley & Sons, Ltd.     

The credibility of a source influences the rate of unconscious plagiarism

Three experiments were conducted to investigate the relationship between the credibility of information and later unconscious plagiarism of that information. In each experiment, ideas concerning ways to reduce traffic accidents were presented from a more credible source (traffic planners) and a less credible source (college freshmen). After a distractor task, participants were asked to generate novel ways to reduce traffic accidents. In Experiments 1 and 2, unconscious plagiarism of ideas presented from the more credible source was greater than from the less credible source. In neither experiment was explicit memory for ideas from each source different in tests of source monitoring or free recall. However, the difference in unconscious plagiarism was eliminated in Experiment 3 by having participants generate the implications of ideas at study. The results are discussed in terms of the explicit factors that affect the incidence of unconscious plagiarism.