Using eye tracking and gaze pattern analysis to test a "dirty bomb" decision aid in a pilot RCT in urban adults with limited literacy

Breast cancer patients' visual attention to information in hospital report cards: An eye-tracking study on differences between younger and older female patients

To (1) explore how women visually attend to a hospital report card (HRC), (2) explore whether visual attention of younger and older women (patients and non-patients) differs. Eye-tracking study with a short survey. Participants (N = 37) were provided with a hypothetical realistic HRC. Total dwell times and fixation counts were measured while participants viewed the information. Overall, no differences existed between younger and older women. Visual attention to the hospital of choice (vs not of choice) and to indicators perceived as most important (vs least important) did not differ. However, women with higher health literacy looked longer at the HRC than women with lower health literacy. Also, per fixation, older patients (vs younger patients) looked longer at the hospital of choice and at indicators perceived most important. Pre-existing conceptions of what information is relevant might result in more in-depth information processing among older patients than younger patients. In general, differences in level of health literacy, rather than (chronological) age, seem to be relevant to take into account when designing and/or updating HRCs.

Face Value: Remote facial expression analysis adds predictive power to perceived effectiveness for selecting anti-tobacco PSAs

Perceived effectiveness (PE) is a validated tool for predicting the potential impact of anti-tobacco public service announcements (PSAs). We set out to evaluate the added predictive value of facial expression analysis when combined with PE in a remote (online) survey. Each of 302 tobacco users watched 3 PSAs and allowed transmission of webcam videos from which metrics for "attention" (head position) and "facial action units" (FAU) were computed. The participants completed scales for their subjective emotions, willingness to share on social media, and intention to quit smoking using the Tobacco Free Florida website. Based on PE, both ready to quit (RTQ) and not ready (NR) respondents favored the same PSAs but RTQs assigned higher PE scores. Negative PSAs ("sad" or "frightening") were more compelling overall but RTQs also favored surprising ads and were more willing to share them on social media. Logistic regression showed that the combination of Attention + FAU+ PE (AUC = .816, p < .0001) outperformed single factors or factor combinations in distinguishing RTQ from NR. This study demonstrates that on-line assessment of facial expressions enhances the predictive value of PE and can be deployed on large remote samples.

How to inform the public about protective actions in a nuclear or radiological incident: a systematic review

Studying how the public behaves after a nuclear emergency will help to assess overall morbidity and mortality. Pre-event education might help to shape behaviour, but how best to engage people with emergency communications for low likelihood, high-impact events is unknown. We did a systematic review to identify factors that predict behaviour in preparation for a nuclear incident, factors that predict behaviour in the immediate aftermath of a nuclear incident, and preferences among members of the public for information designed to educate them about which actions to take in the event of a nuclear incident. In general preparedness, behaviour was predicted by factors including perceived coping effectiveness and having children, among others, but absence of preparedness was attributed to fatalistic attitudes. Importantly, for pre-incident communications to be accepted and recommendations adhered to, the source had to be trusted and perceived to be credible. However, it is notable that family needs, such as picking up children from school, were a stronger predictor of behaviour in a nuclear emergency than communicated directives from authorities. If pre-incident education about nuclear incidents is to be used, several factors-including the source and method of communication, the content, and format of messaging-might increase public engagement with messages and promote the uptake of protective behaviours in a radiation event.