Introduction Access to cognitive assessments for children living remotely is limited. Telehealth represents a potential cost- and time-effective solution. A pilot study was conducted to determine the feasibility of telehealth to assess cognitive function in children with learning difficulties. Methods Thirty-three children (median age = 9 years 11 months), recruited from the New South Wales (NSW) Centre for Effective Reading, underwent assessment of intellectual ability. Comparisons were made between the intellectual ability index scores obtained by a psychologist sitting face-to-face with the children and another psychologist via telehealth using a web-based platform, Coviu. Results The telehealth administration method yielded comparable results to the face-to-face method. Correlation analyses showed high associations between the testing methodologies on the intellectual ability indices (correlation coefficient range = 0.981-0.997). Discussion Findings indicate that telehealth may be an alternative to face-to-face cognitive assessment. Future work in a broader range of cognitive tests and wider range of clinical populations is warranted.

Web-based technology can enable remote delivery of literacy assessments. The technology has the potential to increase the availability of assessments to meet the needs of children who live remotely, in a timely manner and at their family's convenience.

The strength of amodal completion is known to be modulated by contour relationships and global shape. Some researchers have shown that amodal completion also depends on surface similarity, but they have not distinguished the relative importance of similarity in surface representations either pre or post lightness constancy. In the experiments reported here, we aimed to determine whether amodal completion depends on processes that occur either before or after the establishment of lightness constancy. We used computer rendering techniques to vary the consistency of a cast shadow with a decrement in luminance on one side of a partially occluded surface. We found that perceived completion depended on the consistency of the decrement in surface luminance with the orientation of a cast shadow (Exp. 1). In Experiment  2, we generated occluded surface fragments that could be either luminance-matched or lightness-matched to surface fragments on the opposite side of the occluder, and we found that the strength of amodal completion depended primarily on similarity in the perceived surface reflectance. In Experiments 3 and 4, we performed apparent-motion tasks to obtain converging evidence for grouping on the basis of perceived similarity in lightness. We found that matching surfaces in lightness significantly improved the apparent motion of surfaces behind an occluder, as compared with surfaces that were matched in contrast alone. These results suggest that amodal completion depends on the perceived similarity in lightness of partially occluded surface fragments.