The pros and cons of funnel plots as an aid to risk communication and patient decision making

Funnel plots, which simultaneously display a sample statistic and the corresponding sample size for multiple cases, have a range of applications. In medicine, they are used to display treatment outcome rates and caseload volume by institution, which can inform strategic decisions about health care delivery. We investigated lay people's understanding of such plots and explored their suitability as an aid to individual treatment decisions. In two studies, 172 participants answered objective questions about funnel plots representing the surgical outcomes (survival or mortality rates) of institutions varying in caseload, and indicated their preferred institutions. Accuracy for extracting objective information was high, unless question phrasing was inconsistent with the plot's survival/mortality framing, or participants had low numeracy levels. Participants integrated caseload‐volume and outcome‐rate data when forming preferences, but were influenced by reference lines on the plot to make inappropriate discriminations between institutions with similar outcome rates. With careful choice of accompanying language, funnel plots can be readily understood and are therefore a useful tool for communicating risk. However, they are less effective as a decision aid for individual patient's treatment decisions, and we recommend refinements to the standard presentation of the plots if they are to be used for that purpose.     

Correlates of condom use and condom‐use motivation among young South Africans

A survey of South African secondary school students aged 12–17 years (n = 893) included measures designed to investigate relationships between beliefs about HIV/AIDS, condom use, interpersonal relationships, and two dependent measures: motivation to use condoms and reported condom use. We predicted that motivation would be an important correlate of reported condom use and that traditional cultural beliefs included in social cognition models would predict condom use motivation. Hierarchical multiple regression showed that 10% of the variance in reported condom use was accounted for by condom use motivation and age. Condom self‐efficacy, beliefs about condoms and injunctive norms accounted for much of the variance. Other beliefs included susceptibility to HIV and attribution of HIV to asexual sources such as witchcraft indicating that an expanded model of modifiable cognitions may be optimal when designing HIV interventions among young South Africans.     

Bilinguals Show Weaker Lexical Access During Spoken Sentence Comprehension

When bilinguals process written language, they show delays in accessing lexical items relative to monolinguals. The present study investigated whether this effect extended to spoken language comprehension, examining the processing of sentences with either low or high semantic constraint in both first and second languages. English-German bilinguals, German-English bilinguals and English monolinguals listened for target words in spoken English sentences while their eye-movements were recorded. Bilinguals’ eye-movements reflected weaker lexical access relative to monolinguals; furthermore, the effect of semantic constraint differed across first versus second language processing. Specifically, English-native bilinguals showed fewer overall looks to target items, regardless of sentence constraint; German-native bilinguals activated target items more slowly and maintained target activation over a longer period of time in the low-constraint condition compared with monolinguals. No eye movements to cross-linguistic competitors were observed, suggesting that these lexical access disadvantages were present during bilingual spoken sentence comprehension even in the absence of overt interlingual competition.     

(How) does positive and negative extended cross‐group contact predict direct cross‐group contact and intergroup attitudes?

Knowing that fellow ingroup members have cross‐group contact can affect how people think, feel, and behave towards an out‐group. Previous research on extended contact focused almost exclusively on positive cross‐group interactions, neglecting the fact that extended contact can also be negative. In this contribution, we introduce negative extended contact and investigate how both forms of extended contact predict direct cross‐group contact and intergroup attitudes. In two cross‐sectional studies (N₁ = 286, N₂ = 237), we found evidence that positive and negative extended contact uniquely predict intergroup attitudes, and that direct cross‐group contact mediates this effect. In Study 2 , we also provide initial evidence that extended contact might either prepare for or impair direct contact by changing ingroup norms and intergroup self‐efficacy, which in turn influence feelings of intergroup anxiety.     

A Sense of Powerlessness Fosters System Justification: Implications for the Legitimation of Authority,Hierarchy, and Government

In an attempt to explain the stability of hierarchy, we focus on the perspective of the powerless and how a subjective sense of dependence leads them to imbue the system and its authorities with legitimacy. In Study 1, we found in a nationally representative sample of U.S. employees that financial dependence on one's job was positively associated with the perceived legitimacy of one's supervisor. In Study 2, we observed that a general sense of powerlessness was positively correlated with the perceived legitimacy of the economic system. In Studies 3 and 4, priming experimental participants with feelings of powerlessness increased their justification of the social system, even when they were presented with system‐challenging explanations for race, class, and gender disparities. In Study 5, we demonstrated that the experience of powerlessness increased legitimation of governmental authorities (relative to baseline conditions). The processes we identify are likely to perpetuate inequality insofar as the powerless justify rather than strive to change the hierarchical structures that disadvantage them.     

Forming and updating vaccination beliefs: does the continued effect of misinformation depend on what we think we know?

Cognitive Processing - People may cling to false facts even in the face of updated and correct information. The present study confronted misconceptions about the measles, mumps and rubella vaccine...     

Word‐to‐picture recognition is a function of motor components mappings at the stage of retrieval

Embodied approaches of cognition argue that retrieval involves the re‐enactment of both sensory and motor components of the desired remembering. In this study, we investigated the effect of motor action performed to produce the response in a recognition task when this action is compatible with the affordance of the objects that have to be recognised. In our experiment, participants were first asked to learn a list of words referring to graspable objects, and then told to make recognition judgements on pictures. The pictures represented objects where the graspable part was either pointing to the same or to the opposite side of the “Yes” response key. Results show a robust effect of compatibility between objects affordance and response hand. Moreover, this compatibility improves participants' ability of discrimination, suggesting that motor components are relevant cue for memory judgement at the stage of retrieval in a recognition task. More broadly, our data highlight that memory judgements are a function of motor components mappings at the stage of retrieval.