Exploring User-Centred Design in Practice: Some Caveats

This paper provides a nuanced perspective on the topic of user-centred design (UCD) in the human–computer interaction (HCI) field. After a brief outline of its emergence, we describe some of the central tenets of the approach, using the process model of Gulliksen et al. (Behav Inf Technol 22(6):397–409, 2003) as a well-documented exemplar. We then examine in more detail some of the difficulties one can encounter in performing user-centred design (UCD), illuminating these issues through vignettes from specific projects in which we have been involved. In this paper, we focus on issues that can arise in working with children and with people of differing mental abilities. Our argument is that, while a user-centred perspective is required at all times in the design team, the forms of participation of users in the design process needs to fit the context and can vary significantly from that presented as the prototypical UCD approach.

Veracity is in the eye of the beholder: A lens model examination of consistency and deception

Research has attempted to explain perceived cues to deception based upon self-report of what participants believe are ‘good’ cues to deception, or self-report of what cues participants say they base their veracity judgements on. However, it is not clear to what extent participants can accurately self-report what influences their decision-making. Using a within-subjects design, 285 participants completed a questionnaire regarding their beliefs about deception before rating a selection of truthful and deceptive statements on a variety of cues. Expert coders also rated the statements for the same cues. Laypeople and expert coders do not conceptualise between-subject consistency in the same way. A lens model showed that whilst perceptions of cues, such as consistency and amount of detail, influence veracity judgements, these perceptions (and overall veracity judgements) are mostly inaccurate. Fundamentally, there seems to be inconsistencies between how deception research examines consistency and how it is understood and used by laypeople.     

Sensitivity of the Anxiety Disorder Interview Schedule IV in Detecting Potentially Traumatic Childhood Maltreatment

This study examined the sensitivity of the Anxiety Disorder Interview Schedule IV (ADIS-IV) in detecting potentially traumatic childhood abuse experiences in a sample of 50 consecutive adult anxiety disorder patients. Of 13 patients who reported traumatic childhood maltreatment experiences using a behaviorally specific abuse history questionnaire, seven failed to report these experiences during the ADIS-IV interview (a sensitivity of 46%). Findings suggest that the two omnibus gating questions on the ADIS-IV may be insufficient in capturing exposure to certain traumatic events, as stipulated by Diagnostic and Statistical Manual diagnostic criteria for a diagnosis of post-traumatic stress disorder (PTSD). This potential for under identification of trauma history suggests that caution is warranted regarding the use of the ADIS-IV to screen for self-reported trauma exposure in adult outpatients. Alternatives, including the use of PTSD-specific interviews and supplemental trauma event checklists, are discussed.     

Visuospatial counter‐interrogation strategies by liars familiar with the alibi setting

This study examines counter‐interrogation strategies employed by liars giving false alibis. Participants (N = 144) visited a restaurant to buy a sandwich (truth‐tellers) or to use it as a false alibi (liars). Half of the liars were informed they might be asked for a drawing of the alibi setting if interviewed (informed liars). Participants spent either 10 min (high familiarity condition) or 30 s (low familiarity condition) in the restaurant. All participants were asked to provide two visuospatial statements, which were assessed for salient details, nonsalient details, between‐statement consistency, and statement‐alibi setting consistency. Informed liars provided significantly more salient and nonsalient details than uninformed liars and truth‐tellers, particularly in the high familiarity condition. No differences emerged for statement consistency types. The results suggest that liars are more concerned than truth‐tellers about making a positive impression on the interviewer, and they fail to accurately reflect on truth‐tellers' visuospatial statements.     

Associations between serotonin transporter gene promoter region (5-HTTLPR) polymorphism and gaze bias for emotional information

The serotonin transporter promoter region polymorphism (5-HTTLPR) is associated with neural response to negative images in brain regions involved in the experience of emotion. However, the behavioral implications of this sensitivity have been studied far less extensively. The current study used eye-tracking methodology to examine how individuals genotyped for the 5-HTTLPR, including the single nucleotide polymorphism (SNP) rs25531, allocated attention during prolonged (30-s) exposure to face stimuli depicting positive and negative emotion. Short 5-HTTLPR allele carriers and carriers of the long allele with guanine at the sixth nucleotide (S/LG) displayed a stronger gaze bias (total fixation time, number of fixations, mean fixation length) for positive than for sad, threat, or neutral stimuli. In contrast, those homozygous for the long 5-HTTLPR allele with adenine at the sixth nucleotide (LA) viewed the emotion stimuli in an unbiased fashion. Time course analyses indicated no initial 5-HTTLPR group differences; however, S/LG 5-HTTLPR allele carriers were more likely than LA 5-HTTLPR homozygotes to direct gaze toward happy than toward sad stimuli over time. This bias toward positive stimuli during the later stages of information processing likely reflects a strategic effort to downregulate heightened reactivity to negative stimuli among 5-HTTLPR S/LG allele carriers.     

Reduced substance use as a secondary benefit of an indicated cognitive-behavioral adolescent depression prevention program

Our first aim was to test whether a group cognitive-behavioral (CB) depression prevention program reduces substance use escalation over 2-year follow-up relative to two active comparison interventions and a brochure assessment control. Our second aim examined whether reductions in depressive symptoms mediate intervention effects, as posited by the affect-regulation model of substance use. In this indicated prevention trial, 341 high school adolescents at risk for depression because of the presence of elevated depressive symptoms were randomized to a Group CB intervention, group supportive-expressive group intervention, CB bibliotherapy, or educational brochure control condition. Participants in Group CB had significantly lower rates of substance use compared with brochure control participants at both 1- and 2-year follow-up and lower substance use at 2-year follow-up relative to bibliotherapy participants; no other condition differences were significant. Mediational analyses suggested that reductions in depressive symptoms from baseline to posttest accounted for changes in substance use over 2 years for participants in Group CB relative to brochure control participants but did not mediate effects relative to those receiving bibliotherapy. Results suggest that a secondary benefit of this CB group indicated depression prevention program is lower rates of long-term substance use. Findings supported the hypothesis that, relative to a nonactive comparison condition, reductions in depressive symptoms mediated the effects of Group CB prevention on substance use escalation. (PsycINFO Database Record (c) 2012 APA, all rights reserved).     

Collective interviewing of suspects

When people are interviewed about possible wrongdoing that has been committed in groups, they typically are interviewed separately. Yet, in several settings it would be more intuitive and convenient to interview suspects together. Importantly, such collective interviews could yield verbal cues to deception. This is the first deception experiment to investigate collective interviewing. Twenty-one pairs of truth tellers and 22 pairs of liars were interviewed pair-wise about having had lunch together in a restaurant. Given that truth tellers adopt a “tell it all” strategy in the interviews while, in contrast, liars prefer to keep their stories simple, we predicted that pairs of truth tellers would (i) interrupt and (ii) correct each other more, and would (iii) add more information to each other's answers than pairs of liars. The results supported these hypotheses. Theory-driven interventions to elicit more cues to deception through simultaneous interviewing are discussed.     

Protecting and Enhancing Eyewitness Memory: The Impact of an Initial Recall Attempt on Performance in an Investigative Interview

Evidence‐gathering begins at the scene of an incident. Available witnesses may be asked to provide an account of what happened, either in response to an open request for information or, in some regions, by completing a Self‐Administered Interview (SAI©). In both cases, an investigative interview may be conducted at some later date. This study sought to determine the impact of an initial retrieval attempt on a subsequent interview. After exposure to a mock crime, participants completed an SAI© or a free recall (FR), or did not engage in an initial retrieval (Control). One week later, participants were interviewed with a Cognitive Interview. SAI© participants reported more correct information and maintained higher accuracy than FR and Control participants. Consistency analyses revealed that the SAI© was effective because it preserved more of the originally recalled items (Time 1) than did an initial FR, and not because it yielded new recollections at Time 2. Copyright © 2014 John Wiley & Sons, Ltd.