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.

Intraperson Consistency in Financial Risk Tolerance Assessment: Temporal Stability,Relationship to Total Score,and Effect on Criterion-related Validity

Purpose  

In assessing financial risk tolerance it is common practice to compute an overall score but not the intraperson variability across test items (because the latter is believed to be just error variance). We analyzed (1) the stability of intraperson variability, (2) its correlation to the total score, (3) its moderating effect on validity coefficients, and (4) its relation to internal consistency reliability and test–retest reliability.     

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.     

Gender-Based Navigation Stereotype Improves Men’s Search for a Hidden Goal

While a general stereotype exists that men are better at navigating than women, experimental evidence indicates that men and women differ in their use of spatial strategies, and this preference determines gender-differences. When both environmental geometry and landmark cues are available, men appear to learn to navigate using both types of cues, while women show a preference for using landmarks. Using a computer-generated task, 80 undergraduate students from North-East England learned to navigate to a hidden goal. Activating the general navigation stereotype improved the performance of men, compared to the control condition, both when only geometric cues and only landmark cues were present (stereotype lift), suggesting that activating a general stereotype can affect tasks both with (geometry) and without (landmark) established gender-differences in preference. In addition, in the test trial (hidden goal removed) women who learned to navigate using only landmarks spent longer in the correct location of the hidden goal than those who learned to navigate using only geometry. In contrast, the opposite result was found for men, suggesting that when only one cue-type is available, gender-differences still occur, with women better able to navigate using landmarks than geometry, while men seemed to learn more about the location of the goal with reference to geometric than landmark cues.     

Are free testosterone and cortisol concentrations associated with training motivation in elite male athletes?

ObjectivesTo examine correlative associations between salivary free testosterone (T) and cortisol (C) concentrations and training motivation in elite male athletes.DesignSingle group, longitudinal design with repeated measures.MethodsParticipants (n = 15) completed a 5-week progressive resistance training programme. Across 2 weekly workouts, pre and post measures of salivary free T and C concentrations were taken along with voluntary chosen workload, as a proxy for training motivation. Strength and body mass were assessed pre and post training.ResultsIndividual changes in pre-workout free T concentrations correlated strongly to voluntary workloads (pooled r = 0.81, p < 0.001). Pre-workout free C concentrations was weakly correlated to voluntary workload (pooled r = 0.35). Pre-workout hormones (r = 0.57–0.89) and the strength gains were also related.ConclusionsThe salivary free T concentrations of male athletes presented before training were strongly associated with subsequent voluntary workloads, indicating a potential link to training motivation.     

Newtonian Idealism: Matter,Perception, and the Divine Will

This paper investigates Isaac Newton's rather unique account of God's relation to matter. According to this account, corpuscles depend on a substantially omnipresent God endowing quantities of objective space with the qualities of shape, solidity, the unfaltering tendency to move in accord with certain laws, and—significantly—the power to interact with created minds. I argue that there are important similarities and differences between Newton's account of matter and Berkeley's idealism. And while the role played by the divine will might at first appear to be a species of occasionalism, I conclude that there are, for Newton, genuine causal relations between minds and bodies. Ultimately, to fully appreciate this account of the creation and persistence of matter, we must consider not only Newton's metaphysical writings, but also his sensorium theory of mind‐body interaction, his heterodox theological commitments, and the influences of Descartes, More, and Locke.     

Closing the Gap in Aboriginal and Torres Strait Islander Youth Suicide: A Social–Emotional Wellbeing Service Innovation Project

Objective

The suicide rate for Queensland's Aboriginal and Torres Strait Islander young people is over four times that of their non‐Indigenous counterparts, with Aboriginal and Torres Strait Islander children (under 15) dying by suicide at 12 times the non‐Indigenous rate. There is a need for interventions that are culturally validated and community‐endorsed. The aim of this article is to describe the design and implementation of a group‐based intervention, as well to report the results of the various qualitative and quantitative measures.

Method

Sixty‐one Aboriginal and Torres Strait Islander persons aged 11–21 years completed a social–emotional wellbeing (SEWB) program at headspace Inala. Data were available through to 2‐month follow‐up for 49 participants. The program was designed and delivered in collaboration with the local Aboriginal and Torres Strait Islander community.

Results

There was a statistically significant decrease in suicidal ideation experienced by the participants after completing the program. Qualitative measures indicated that participants experienced improved understanding of holistic health and an increased number of coping skills.

Conclusions

Not only was this the first evaluated intervention in Aboriginal and Torres Strait Islander youth to ever report a decrease in individual suicidality, the program was carefully designed and implemented in consultation with community in a culturally sensitive manner and thus provides an invaluable framework for future SEWB work.     

Predicting People’s Intention to Donate Their Body to Medical Science and Research

Predictors of people’s intention to register with a body bequest program for donating their deceased body to medical science and research were examined using standard theory of planned behavior (TPB) predictors (attitude, subjective norm, perceived behavioral control) and adding moral norm, altruism, and knowledge. Australian students (N = 221) at a university with a recently established body bequest program completed measures of the TPB’s underlying beliefs (behavioral, normative, and control beliefs) and standard and extended TPB predictors, with a sub-sample reporting their registration-related behavior 2 months later. The standard TPB accounted for 43.6%, and the extended predictors an additional 15.1% of variance in intention. The significant predictors were attitude, subjective norm, and moral norm, partially supporting an extended TPB in understanding people’s body donation intentions. Further, important underlying beliefs can inform strategies to target prospective donors.