公安民警的创伤后应激症状对执行功能的影响—基于Stroop范式的探究

公安民警常常身临应激和危险情境中,是创伤事件的易感人群,但其创伤后应激症状对执行功能的影响研究尚且缺乏。已有研究发现,具有创伤后应激症状的个体的执行功能存在缺陷,表现在对冲突信息的抑制能力受损以及对创伤相关信息的注意偏向和情绪唤起。本研究以公安民警为实验组被试,据其创伤后应激症状分为高低两组,在校大学生为对照组被试,采用Stroop范式探究创伤后应激症状对公安民警“冷”、“热”执行功能的影响。结果表明,具有创伤后应激症状的公安民警在“冷”、“热”执行功能上不存在缺陷,但仍在一定程度上受到创伤后应激症状的影响。启示对具有创伤后应激症状的公安民警进行干预时,应关注其症状的严重程度,在“热”执行功能上寻求更有效的干预方式。     

Visible minority applicant concerns and assessment of occupational role in the era of community‐based policing

Attempts to recruit minority officers are an integral component of community‐based policing initiatives in Western democracies. To better understand how to optimize these initiatives, 80 African‐Canadian police applicants were surveyed for perceptions of occupational role, career aspirations and obstacles to minority recruitment. Although service to the Black community was a high priority, applicants reported this goal as secondary to providing service regardless of ethnicity. Further, applicants reported they would be as effective policing the White community and more effective policing the Black community than their White counterparts. Racial prejudice on the part of police officers and society were viewed as the most significant obstacles to minority recruitment. Two tests of potential perceptual distortions indicated that applicants perceived African‐Canadian acquaintances to be more frequent targets of police discrimination than they were as individuals, and perceived themselves as relatively less alienated from the police than were the police from their group. Discussion focuses on obstacles to minority recruitment, the fit between applicants' attitudes and the demands of modern policing, and the potential impact of a more ethnically diverse force for police–minority relations. Copyright © 1999 John Wiley & Sons, Ltd.     

“To serve and protect” when expecting to be seen negatively: The relation between police officers' contact with citizens,meta‐stereotyping,and work‐related well‐being

We examined the relationship between contact of police officers with citizens, their (meta‐)stereotypes about citizens, and their work‐related well‐being. Ninety‐three police officers from 4 police stations in low‐ and high‐crime regions in France completed the questionnaire. As expected, negative well‐being of police officers is predicted by negative contact with citizens and their belief that police officers are stereotyped negatively by citizens. Moreover, the relationship between negative contact and negative well‐being was mediated by police officers' beliefs that police officers are perceived negatively by citizens, whereas their perceptions of citizens did not mediate this relationship. Interestingly, level of crime did not influence these relationships. Together, this research shows the important role of beliefs about how one's group is stereotyped when in contact with another group as it may have consequences for people's well‐being.     

Police officers' beliefs about,and use of,cues to deception

Meta‐analytic findings indicate that people, including police officers, are generally poor at detecting low‐stakes deception. Related to this, investigations of behaviours that people reportedly use to make truth or lie judgements tend to conclude that people rely on incorrect stereotypes. However, consistent findings suggest that police officers are able to detect high‐stakes deception; this implies that, at least in some contexts, police officers utilise reliable cues to deception. The research presented here was an investigation of cues to deception used by police officers (N  = 69), when making veracity decisions about real world, high‐stakes communications. Data were collected on both free report cues, and also prescribed cues that were known (from previous research), to discriminate between liars and truth‐tellers in the communications that the police officers observed. Officers free reported using cues related to verbal content, emotion, body language, eyes, vocal cues, and external cues. Most prescribed cues were self‐reportedly used correctly by large majorities of the officers, suggesting that they may not rely on inaccurate stereotypes. Self‐report use of categories of free report cues, and prescribed cues, was not related to accuracy in detecting deception. As people may not always be aware of the behaviours on which their judgements are based, the relationships between some of the behaviours actually displayed in the communications, and group accuracy in detecting deception in those communications, were also investigated. Group accuracy was related to the presence of subjective, emotion‐related cues in the communications.     

Generalized Communicative Suspicion (GCS) Among Police Officers: Accounting for the Investigator Bias Effect1

Research shows that police officers are no more accurate than non‐officers in discerning between truthful and deceptive statements, but more biased than non‐officers to judge statements as deceptive. This was labeled by Meissner and Kassin (2002) as the investigator bias effect. A likely explanation could be that, since officers are normally involved in situations where questioning the truthfulness of the interviewee is essential, they could develop a generalized communicative suspicion (GCS). Levine and McCornack's (1991) GCS scale was adapted to the Spanish context and used to compare the GCS ratings of 152 undergraduates, 88 experienced officers, and 89 police recruits. Experienced officers’ GCS scores were significantly higher than those of the other groups, which did not differ from each other. This suggests that socialization within the police force increases the officers’ suspicion, leading them to make deceptiveness judgments.     

Procedural injustice,police legitimacy,and officer gender: A vignette‐based test of the invariance thesis

Role congruity theory suggests that gender‐based stereotypes can result in female police officers paying a higher price (i.e., viewed as less legitimate) relative to male officers for mistreating people. The invariance thesis posits that the effect of (un)fair treatment by legal authorities on legal attitudes and beliefs is stable across situations, time, and space. This study tested the invariance thesis by assessing whether the effect of procedural injustice on police legitimacy differed across officer gender. A factorial vignette survey that consisted of two types of citizen‐initiated police encounters was administered to a university‐based sample (N = 525). The results showed that the effect of procedural injustice had a powerful and significant influence on participants' legitimacy perceptions. These effects were consistent regardless of whether the treatment was doled out by a male or a female police officer. The findings provide support for the invariance thesis.     

Lay people's and police officers' attitudes towards the usefulness of perpetrator voice identification

Expert and lay knowledge of factors that affect the identification of a voice is an area of research that is still relatively unexplored. Much more research has focused on eyewitness identification and eyewitnesses' common knowledge. However, results from ‘eyewitnessing’ studies may not be directly applicable to ‘earwitnessing’. The present study examines how knowledgeable British lay people and police officers were concerning earwitness identification performance. One hundred nine participants (i.e. 49 lay people and 60 police officers) responded to a specially designed questionnaire. Results showed respondents to be more knowledgeable than expected, although police officers were no more knowledgeable than the general population. The existence of meta‐knowledge is discussed in relation to previous studies. Copyright © 2006 John Wiley & Sons, Ltd.     

Police officers' credibility judgments: Accuracy and estimated ability

A study was conducted to examine Spanish police officers' and nonofficers' lie‐ and truth‐detection accuracy, as well as their estimated detection ability. The participants were 121 police officers and 146 undergraduates who watched videotaped truthful and deceptive statements. They had to indicate: (1) whether each statement was truthful or deceptive, and (2) how good police officers were, in comparison with the general population, at detecting the truthfulness or deceptiveness of a statement. Results indicate that police officers' accuracy was not higher than that of nonofficers, rather, while the officers reached an accuracy rate close to chance probability, the undergraduates surpassed that probability. Officers had a very strong tendency to judge the statements as deceptive; this made them less accurate than the students in judging the truthful accounts, while both groups reached a similar accuracy when judging the deceptive ones. Both occupational samples considered that the police are more capable of identifying truths and lies than the general population. However, this belief was stronger among the officers themselves than among the nonofficers. No significant correlation between estimated ability and accuracy was found for either sample. The results are explained in terms of the participants' wrong beliefs about the cues to deceit and the socialization process that police officers undergo, which would increase their confidence and perceived ability while hindering their learning of the actual indicators of deceit. The need for officers to receive training is emphasized, and some directions are given on how this training should be carried out.     

Turning a blind eye to double blind line‐ups

Although psychologists have urged police officers to use double blind line‐up procedures during their investigations, police officers state that these would be difficult to administer and most have been reluctant to implement this change. Four studies examine whether lay people's judgements about the guilt of a suspect vary according to whether a brief written summary of a case described the identification procedure as double blind or non‐double blind. The effects were all small (and almost all non‐significant). Most people do not treat double blind line‐ups differently from non‐double blind line‐ups when assessing the guilt of a defendant. Either police investigators should stop using this biased method or police investigators and others in the judicial system (e.g. jurors, judges) should be informed of this bias when evaluating results from any line‐up. Copyright © 2009 John Wiley & Sons, Ltd.     

Social norms and the expression and suppression of prejudice: the struggle for internalization

The authors studied social norms and prejudice using M. Sherif and C. W. Sherif's (1953) group norm theory of attitudes. In 7 studies (N = 1,504), social norms were measured and manipulated to examine their effects on prejudice; both normatively proscribed and normatively prescribed forms of prejudice were included. The public expression of prejudice toward 105 social groups was very highly correlated with social approval of that expression. Participants closely adhere to social norms when expressing prejudice, evaluating scenarios of discrimination, and reacting to hostile jokes. The authors reconceptualized the source of motivation to suppress prejudice in terms of identifying with new reference groups and adapting oneself to fit new norms. Suppression scales seem to measure patterns of concern about group norms rather than personal commitments to reducing prejudice; high suppressors are strong norm followers. Compared with low suppressors, high suppressors follow normative rules more closely and are more strongly influenced by shifts in local social norms. There is much value in continuing the study of normative influence and self-adaptation to social norms, particularly in terms of the group norm theory of attitudes.     

The Police Officer's Dilemma: A Decade of Research on Racial Bias in the Decision to Shoot

We review sociological, correlational, and experimental research that examines the effect of a target's race on the decision to shoot. Much of this work involves computer‐based simulations of a police encounter, in which a participant must decide whether or not to shoot a potentially hostile target who is either Black or White. Experimental work with undergraduate participants reveals a clear pattern of bias (a tendency to shoot Black targets but not Whites), which is associated with stereotypes linking Blacks with the concept of danger. Subsequent work with police officers presents a more complex pattern. Although police are affected by target race in some respects, they generally do not show a biased pattern of shooting. We suggest that police performance depends on the exercise of cognitive control, which allows officers to overcome the influence of stereotypes, and we conclude with potential implications of this research for law enforcement.     

The impact of national integration policies on prejudice and psychological well-being: The fundamental role of the clarity and coherence of integration policies

Recent advances in social psychological research have shown that national integration policies influence how immigrants are perceived and treated by the mainstream population. However, the processes by which these policies come to have an impact on prejudice and well-being of the general population are largely unknown. Moreover, past research has often relied on unrepresentative samples limiting generalizability. The present research proposes that when the national integration policies of a given society are perceived as clearly defined and coherent, they have a direct impact on the perceived cultural norm related to those national integration policies. In turn, the perceived cultural norm affects personal attitudes toward cultural norms (i.e., the degree to which individuals support a given policy), which influence the level of anti-immigrant prejudice as well as psychological well-being. Findings from two correlational studies with representative samples of the mainstream population conducted in France on the policy of secularism (N = 940) and in Québec on the policy of interculturalism (N = 912) supported the proposed theoretical model.     

Investigating Predictors of Superior Face Recognition Ability in Police Super‐recognisers

There are large individual differences in the ability to recognise faces. Super‐recognisers are exceptionally good at face memory tasks. In London, a small specialist pool of police officers (also labelled ‘super‐recognisers’ by the Metropolitan Police Service) annually makes 1000's of suspect identifications from closed‐circuit television footage. Some suspects are disguised, have not been encountered recently or are depicted in poor quality images. Across tests measuring familiar face recognition, unfamiliar face memory and unfamiliar face matching, the accuracy of members of this specialist police pool was approximately equal to a group of non‐police super‐recognisers. Both groups were more accurate than matched control members of the public. No reliable relationships were found between the face processing tests and object recognition. Within each group, however, there were large performance variations across tests, and this research has implications for the deployment of police worldwide in operations requiring officers with superior face processing ability. Copyright © 2016 John Wiley & Sons, Ltd.     

Individuality and the prejudiced personality

Many researchers maintain that individual psychological processes related to our human evolutionary inheritance, a person's particular genetic make-up, and/or childhood learning and socialisation patterns are a root cause of prejudice. The effects of collective processes on the individual are considered to be largely in the past, producing individual personalities and social attitudes that are relatively fixed and enduring. There is, however, an alternative perspective on the impact of the collective embodied in self-categorization theory (SCT). From the SCT perspective, the self is both personal and collective, and shifts in the nature of self-categorisation produce qualitative shifts in judgements of oneself and others. Through one's identity as a group member, contemporary social forces can shape the psychology of the person. This analysis not only has direct implications for how we understand the relationship between personality and prejudice, but also offers an alternative way of thinking about personality itself. What emerges from our own and related research on prejudice is a more complex analysis of individuality, one that is ineluctably embedded in contemporary intragroup and intergroup identities and the societal and ideological realities that define group life as well as in past learning and maturation.     

On being mindful,emotionally aware,and more resilient: Longitudinal pilot study of police recruits

Police officers are at particular risk of stress when compared to people in other occupational groups. A compounding factor is that police are prone to the use of avoidant coping strategies when attempting to deal with this stress. Evidence suggests that “anti‐avoidance” strategies, of acceptance, mindfulness and emotional awareness, are more effective ways of coping, and are linked to both mental health and personal effectiveness. This study followed 60 trainee police officers from the recruit phase into the workplace to determine if these processes predicted more positive mental health and wellbeing in police recruits after 1 year of service. Mindfulness predicted depression at follow‐up, while emotion identification skill predicted general mental health. These results suggest that police officers and police organisations may benefit from interventions aimed at developing and promoting mindfulness and emotion identification.     

Autonomous forms of motivation underpinning injury prevention and rehabilitation among police officers: An application of the trans-contextual model

The present study applied the trans-contextual model (TCM) to understand the motivational processes underpinning workers?? injury prevention and rehabilitation intentions and behavior. Full-time police officers (N?=?207; M age?=?37.24, SD?=?9.93) completed questionnaire measures of the TCM variables. Covariance-based SEM for the full sample revealed that the effect of autonomy support from supervisor on autonomous motivation for injury prevention (M-injury) was fully mediated by autonomous work motivation (M-work), and the effect of M-injury on intention was fully mediated by attitude and subjective norm. Variance-based SEM for the 87 participants who had recent occupational injury showed that the effect of autonomy support from supervisor on autonomous treatment motivation (M-treatment) was partially mediated by M-work, and the effect of perceived autonomy support from physician on treatment adherence was fully mediated by M-treatment. There was no effect of treatment adherence on recovery length. Findings support the motivational sequence of the TCM in an occupational context.     

‘Who's the Thief?’ The Influence of Knowledge and Experience on Early Detection of Criminal Intentions

Our study investigates if people are able to recognize thieves based on their nonverbal behavior prior to committing the crime. We implemented authentic closed‐circuit television footage from thefts committed at an international airport into a computer‐based test. Five groups of participants (students, police recruits, inexperienced police officers, experienced police officers, and criminal investigators) were studied. The results show that criminals display nonverbal behavior that can be used by observers for early recognition of criminal intentions. In addition, early recognition seems to benefit from knowledge about the criminals' modi operandi (criminal investigators performed best), which renders early recognition teachable and trainable. Further, all participants seem to be biased towards innocence, but this bias was less pronounced in police officers than in students. These findings are discussed in relation to the well‐documented truth‐bias and investigator‐bias in lie detection research as well as taking our measurement method into account.Copyright © 2015 John Wiley & Sons, Ltd.     

Development of sense of coherence during two group interventions

Kähönen, K., Näätänen, P., Tolvanen, A. & Salmela‐Aro, K. (2012). Development of sense of coherence during two group interventions. Scandinavian Journal of Psychology 53, 523–527. Burnout is a serious occupational hazard. This study investigated the possibility to develop an effective salutogenic group intervention among employees suffering from severe burnout symptoms. Participants consisted of employees aged 31 to 59 years working in different public service occupations, such as police officers, tax officers, (and other public service officers), and assigned to three different groups: analytic (N = 25), psychodramatic (N = 24) and controls (N = 28). The intervention comprised 16 separate days over a nine‐month period. Changes in sense of coherence (SOC) were measured four times with the 13‐item Orientation to Life Questionnaire during the intervention and at six‐month follow‐up, and analyzed by general linear model (GLM) and using Cohen’s d to estimate effect sizes. Change in SOC between the three groups was statistically significant (F(4,148) = 2.65, p = 0.036). The psychodrama group showed a higher increase in SOC than the analytic group during the intervention, while the improvement in the analytic group was significant during the six‐month follow‐up. Total effect size from baseline to follow‐up was in the analytic group 0.71, in the psychodrama group 0.47, and in the control group from baseline to end of intervention 0.09. The results show that it is possible to improve SOC by group intervention in the occupational healthcare context. The dialogue‐based analytic method and action‐based psychodramatic method differ in their specific effects.     

Let's find the evidence: an analogue study of confirmation bias in criminal investigations

People involved in criminal proceedings (e.g. police officers, district attorneys, judges, and jury members) may run the risk of developing confirmation bias, or tunnel vision. That is, these parties may readily become convinced that the suspect is guilty, and may then no longer be open to alternative scenarios in which the suspect is actually innocent. This may be reflected in a preference for guilt‐confirming investigation endeavours, as opposed to investigations that are aimed at confirming, or even excluding, alternative scenarios. In three studies, participants read a case file, and were subsequently instructed to select additional police investigations. Some of these additional endeavours were guilt‐confirming (i.e. incriminating), whereas others were disconfirming (i.e. exonerating). Results suggest that additional investigation search was guided by an initial assessment of the suspect's guilt (Study 1). Furthermore, participants' tendency to select incriminating investigations increased with increased crime severity, and with the strength of the evidence present in the case file. Finally, the selection of incriminating investigations was associated with conviction rates (Study 3). However, in general, participants did not favour incriminating endeavours. That is, in the three studies, the percentages of selected incriminating endeavours did hardly or not exceed 50%. Copyright © 2010 John Wiley & Sons, Ltd.     

High risk factors of hostage barricade incidents in a Japanese sample

Hostage taking incidents in which the police besiege a particular location are known as hostage barricade incidents. The first aim of the present article was to examine the process of risk assessment in hostage incidents, using a group of police officers as the sample. The second aim was to identify the risk factors involved in hostage incidents and examine the degree of concordance between the risk as assessed by the police officers and the figures obtained from the analysis of actual hostage barricade incidents. For the purpose of this study, a survey was carried out across Japan, and 45 police officers responsible for hostage negotiation responded to the questionnaires. Additionally, a sample of 116 actual hostage barricade incidents that occurred in Japan from 1970 to 2002 was utilised to examine the high risk factors involved in such cases. As per the results, a majority of the police officers (73.3%), in response to an open‐ended question, indicated that the highly excited state of the hostage takers was dangerous for the hostages. Moreover, it was demonstrated in all 116 incidents that several factors such as ‘a long siege’ tended to increase the risk of deaths, though this was very rare (n = 4). On the other hand, the proportion of injuries to the hostages was high in expressive situations such as domestic situations or suicide attempt scenarios. On the whole, the results obtained from the analyses of actual incidents were consistent with those obtained from the police officers' risk assessment in many respects. However, the correlation between the degree of risk as assessed by the police officers and the actual rate of deaths/injuries to the hostages was very low. Copyright © 2004 John Wiley & Sons, Ltd.