Comparing detailed and less detailed pre-lineup instructions

It is generally agreed that proper pre-lineup instructions can reduce the rate of mistaken identifications of innocent suspects. However, the exact nature of these instructions has not been empirically established. We compared the effects of the detailed pre-lineup instructions recommended by the US Department of Justice to a simple instruction that the perpetrator may or may not be present. Both forms of unbiased instructions significantly reduced mistaken identifications when compared with biased instructions. Comparison of performance using the utility-based analysis deviation from perfect performance demonstrated that unbiased instructions are to be preferred under assumptions of low base rates or high costs of mistaken identifications and do as well as biased instructions under assumptions of high base rates or low cost of misidentification.     

Refining the blank line-up procedure: How should we instruct eyewitnesses?

Presenting a blank line-up—containing only fillers—to witnesses prior to showing a real line-up might be useful for screening out those who pick from the blank line-up as unreliable witnesses. We show that the effectiveness of this procedure varies depending on instructions given to witnesses. Participants (N = 462) viewed a simulated crime and attempted to identify the perpetrator from a line-up approximately 1 week later. Rejecting a blank line-up was associated with greater identification accuracy and greater diagnosticity of suspect identifications, but only when witnesses were instructed prior to the blank line-up that they would view a series of line-ups; the procedure was ineffective for screening when witnesses were advised they would view two line-ups or received no instruction. These results highlight the importance of instructions used in the blank line-up procedure, and the need for better understanding of how to interpret choosing patterns in this paradigm.     

All holes are the same: Emerging from the confusion

The author describes a type of mental development in which the primitive libidinal value of faeces and urine is kept unaltered all through adulthood. In this instance, individuals harbour fantasies of projective identifi cation with the internal parents, denying their real dependence, which leads to a pseudomaturity. These fantasies are usually accompanied by anal and genital masturbation and have intense aggressive content. Furthermore, there is a signifi cant confusion among all body orifi ces, leading to an inability to distinguish the self from the object, the inner world from outside reality. Individuals with this type of development can only maintain limited object relations and have highly erotized excretory activities. Manipulation of faeces may occur. This structure works as a defence against breakdown, but may also provide pleasure as it gives the illusion of omnipotent control of the object, as typical in pathological organizations. The author presents clinical material and discusses the diffi culties of the analysis, in which the patient tries to seduce the analyst into colluding with his mental functioning, primarily as a means of communication as well as a projection of his despair and his disbelief in the analyst's ability to help him.     

The Politicization of Migrants: Further Evidence that Politicized Collective Identity is a Dual Identity

The article examines the role of collective identification processes in the politicization of Russian migrants in Germany. Building on the assumption that politicized collective identity (PCI) is a dual identity, the authors predicted and found that dual identification as both Russian and German was positively related to politicization among members of the Russian minority in Germany. This relationship held up even when the influences of several sociodemographic variables, past political activity, and other forms of collective identification were statistically controlled. In addition, perceived maltreatment of Russian migrants in Germany moderated the relationship between dual identification and politicization in keeping with the theoretical assumption that the development of PCI presupposes high awareness of shared grievances. Finally, dual identification was unrelated to acceptance of political violence, but positively related to self‐restriction to peaceful political means. The constructive role of politicization driven by dual identification in social integration is discussed.     

鉴定干细胞源胰岛素分泌细胞的方法及其利弊

在诱导各种干细胞向胰岛素分泌细胞(insulin producing cells,IPCs)分化的研究中,或多或少地存在着分化效率低、分化细胞不够成熟以及分泌产物的性质难以确定等问题,而IPCs的功能决定了其治疗糖尿病的效果,也是衡量各种诱导方案的重要指标。如何合理、科学地对IPCs进行形态与功能鉴定本文对此加以探讨。     

Living in the soap bubble: the infertile couple and the standstill of the transcendent function in the treatment of an adolescent girl1

Abstract: This paper considers disturbances of identity and developmental breakdown in the phase of ‘emergent adulthood’ with young adults together with a disturbance of the capacity of the Self for coniunctio. It is proposed that the capacity for effective intrapsychic linking as conceptualized in analytic psychology with the concepts of the coniunctio and the transcendent function, is disturbed because of an unconscious identification with an infertile ‘couple’. This unconscious couple fantasy can lead to a standstill of the transcendent function and prevents the growth of meaning via the linking between parts of the psyche. This can lead to considerable clinical disturbances. A clinical vignette from the treatment of an adolescent girl should illustrate these hypotheses. The patient had developed a not good enough internal space and she suffered from fragmentation anxieties. She tried to control these anxieties by obsessive behaviour and by forms of adhesive identification. The standstill of the transcendent function was manifested when the patient developed a negative therapeutic reaction.     

Persistence and accommodation in short‐term priming and other perceptual paradigms: temporal segregation through synaptic depression

Perceptual input changes constantly in an unpredictable fashion, often changing before our somewhat sluggish perceptual systems have adequately processed this input. This can give rise to source confusion—how do we know whether a given perceptual activation is due to the current input, or a previous input that had yet to be completely processed? We propose that activity‐dependent neural accommodation naturally limits this source confusion by suppressing items once they have been identified. We review behavioral paradigms from different literatures that measure the correlates of persistence and accommodation. Of the various accommodative mechanisms, we focus on synaptic depression, deriving a rate‐coded expression that can be used to produce accommodating dynamics in any neural network with real valued activation. We implement this expression in a hierarchical model of perception termed, “a neural mechanism for responding optimally with unknown sources of evidence” (nROUSE). This model can be viewed as a more detailed version of the more abstract ROUSE model of Huber, Shiffrin, Lyle, and Ruys (2001), which produces accommodated levels of feature evidence through an optimal calculation. We apply nROUSE to three short‐term priming experiments that manipulated prime duration.     

Wisdom of the social versus non-social crowd in face identification

Face identification is more accurate when people collaborate in social dyads than when they work alone (Dowsett & Burton, 2015, Br. J. Psychol., 106, 433). Identification accuracy is also increased when the responses of two people are averaged for each item to create a ‘non-social’ dyad (White, Burton, Kemp, & Jenkins, 2013, Appl. Cogn. Psychol., 27, 769; White et al., 2015, Proc. R. Soc. B Biol. Sci., 282, 20151292). Does social collaboration add to the benefits of response averaging for face identification? We compared individuals, social dyads, and non-social dyads on an unfamiliar face identity-matching test. We also simulated non-social collaborations for larger groups of people. Individuals and social dyads judged whether face image pairs depicted the same- or different identities, responding on a 5-point certainty scale. Non-social dyads were constructed by averaging the responses of paired individuals. Both social and non-social dyads were more accurate than individuals. There was no advantage for social over non-social dyads. For larger non-social groups, performance peaked at near perfection with a crowd size of eight participants. We tested three computational models of social collaboration and found that social dyad performance was predicted by the decision of the more accurate partner. We conclude that social interaction does not bolster accuracy for unfamiliar face identity matching in dyads beyond what can be achieved by averaging judgements.     

The effect of biased lineup instructions on eyewitness identification confidence

Although it is well‐known that biased lineup instructions (i.e., those that do not inform witnesses the perpetrator may not be in the lineup) inflate false identifications, their effects on witness confidence are less well understood due to methodological limitations of past studies. We report two studies that use novel methodologies to obviate these limitations. Study 1 (N = 177) demonstrated that biased lineup instructions increased witnesses' average estimates of the likelihood that a lineup member is guilty. Study 2 (N = 137) introduces a novel debiasing paradigm that allows a parsing of choosers into those who made an identification only because of the biased instructions (induced choosers), and those who would have chosen despite the instructions (inherent choosers). Biased lineup instructions inflated confidence only among induced choosers, but not among inherent choosers. Contrary to legal reasoning, witness confidence is an insufficient metric to determine the suggestiveness of biased instructions.     

Supporting child witnesses during identification lineups: Exploring the effectiveness of registered intermediaries

Performance at identification lineup was assessed in eighty‐five 6‐ to 11‐year‐old typically developing children. Children viewed a live staged event involving 2 male actors, and were asked to identify the perpetrators from 2 separate lineups (one perpetrator‐present lineup and one perpetrator‐absent lineup). Half the children took part in lineups adapted by a registered intermediary (an impartial, trained professional who facilitates understanding and communication between vulnerable witnesses and members of the justice system), and half took part in “best‐practice” lineups, according to the current guidance for eyewitness identification in England and Wales. Children receiving assistance from a registered intermediary (relative to children who received best‐practice lineups) were more accurate in their identifications for perpetrator‐present lineups, and there was some evidence that they were also more accurate for perpetrator‐absent lineups. This provides the first empirical evidence for the effectiveness of registered intermediary support during identification lineups.