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HB, AF, SH, MK, SP, JS, KS and TW collected or generated the data. KO, KG, KP, KS and TW analysed or interpreted the data. KO had full access to all of the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis Study Funding The study was funded by AstraZeneca. No restrictions were placed on authors regarding the statements made in the manuscript.

The HAO demonstrates satisfactory psychometric properties. Co-production of the measure confers clinical credibility. The brevity of the tool means it can be incorporated into routine clinical practice to drive improvements in service quality.

Salient distractors lower quitting thresholds in visual search. That is, when searching for the presence of a target among filler items, a large heterogeneously coloured distractor presented at a delayed onset produces quick target-absent judgements and increased target-present errors. The aim of the current study was to explore if the timing of the salient distractor modulates this Quitting Threshold Effect (QTE). In Experiment 1, participants completed a target detection search task in the presence or absence of a salient singleton distractor that either appeared simultaneously with other search items or appeared at a delayed onset (i.e., 100 ms or 250 ms after other array items appeared). In Experiment 2, a similar method was used, except that the salient singleton distractor appeared simultaneously, 100 ms before, or 100 ms after the other array items. Across both experiments, we observed robust distractor QTEs. Regardless of their onset, salient distractors decreased target-absent search speeds and increased target-present error rates. In all, the present findings suggest that delayed onsets are not required for lowered quitting thresholds in visual search.

No abstract