The importance of dark adaptation for forensic examinations; an evaluation of the Crime-lite Eye™.

Forensic practitioners are recommended to dark adapt their eyes prior to conducting evidential searches in the dark. The dark adaptation process remains poorly standardised across the discipline, with little quantified regarding the benefits of such preparative steps. Herein, we report the findings of a study that recruited 50 participants to assess the effectiveness of the Crime-lite Eye™, a darkness adaptation device developed to assist forensic practitioners both in the laboratory and in field. Participants were tasked with searching for the fluorescent signatures left by reaction of 1,8-diazafluoren-9-one (DFO) with amino acids, in a manner akin to the fluorogenic fingerprint treatment of porous evidence. Using an Epson Stylus Photo R265 inkjet printer, ink cartridges were filled with alanine solutions of various concentrations, allowing different motifs to be printed onto copy paper and subsequently developed using DFO. Participants searched for this 'evidence' both with and without dark adapted vision. On average, participants were able to locate and correctly recognise 16% more evidence once dark adapted using the Crime-lite Eye™. The increase in evidence located by participants once dark adapted suggests that crime scene officers should be dark adapting in order to visualise as much as possible. The time taken to dark adapt, 10 min on average during this study, is not excessively long, and should not significantly slow the investigation.

20 years of the Loughborough user centered assistive technology design process: has it made a difference?

An estimated 518 students were taught the Loughborough User Centered Assistive Technology design process, LUCAT, since 2000. Graduates were contacted via a professional networking website to take part in a survey with four being interviewed. The purpose of the survey was to find out if: 1) Did they still use any parts of the process; and 2) Where they had applied them. The respondents ranged from returning placement undergraduates to senior managers in research and development within major companies. From the 105 respondents 23% stated they used parts of the LUCAT process every working day, a further 25% once a week and 27% once a month. The elements of the process used were predominantly semi-structured interviews, concept generation, codesign, design presentation and feedback. Respondents highlighted the benefits of using this process including gaining insights from users, being time efficient, saving money, developing a relationship with end users and making a difference to the lives of people with disability. It was suggested some industries had still not incorporated a User Centered Design approach within New Product Development. The use of the process was shown to be useful beyond AT product design into most areas of design activity.

Cultural bias: a comparison of semantic responses by 126 students from Pakistan and the United Kingdom to a wheelchair when viewed against a congruent and incongruent background.

PURPOSE: Converging visual behavioural and attentional allocation studies within neuroscience have shown culture influences the processing of visual information obtained from the visual field. While attending (reviewing) a visual scene, individuals from a collectivist culture attend more to the context (background) compared to those from an individualist culture who view more the focal object. This highlights the effect of cultural conditioning in terms of holistic and analytical processing of visual information. This study aimed to demonstrate these principles in the context of an assistive product, a wheelchair, highlighting the key visual elements of the form; and, how a congruent background (hospital room) or incongruent (athletics track) influenced cultural bias during visual processing and assigned meaning. MATERIAL AND METHODS: A combination of research methods (Semantic Differential Scale and eye-tracking) was used to triangulate the results. A total of 126 adult student participants, (Pakistani/collectivist, n = 57) and the (UK/individualist, n = 69), viewed a visual presentation of a wheelchair with semantically congruent and then an incongruent background and responded via an online questionnaire. A sub-sample completed the survey whilst monitored via eye-tracking. RESULTS: Pakistani respondents used shorter and less frequent fixations on the foreground compared to the responses of their counterparts (UK respondents). The wheel of the wheelchair was highlighted as the prominent form by both groups. CONCLUSION: Results demonstrate a culture-influenced pattern of visual processing even when the product was displayed against a semantically incongruent background. The findings from this study also validate and extend the outcomes of similar studies revealing a more specific, yet consistent, cultural effect on individuals' visual perception. Finally, the efficacy of triangulated research methods in their relationship to exploring the AT product's semantics was discussed.IMPLICATIONS FOR REHABILITATIONThe knowledge of AT products' semantics will be significant to investigate, for their improved social acceptance, particularly when considered from a diverse cultural standpoint.A model of best practice, focussing on semantics manipulation, will provide AT product designers, practitioners, and those involved in their marketing, Internationally, with a suitable process/tool to positively reframe the perception of these devices.Finally, this research will help product and industrial designers to consider cultural cognitive styles in the design of products for the better adoption of products within the global marketplace.

A review of innovation strategies and processes to improve access to AT: Looking ahead to open innovation ecosystems.

It is essential to understand the strategies and processes which are deployed currently across the Assistive Technology (AT) space toward measuring innovation. The main aim of this paper is to identify functional innovation strategies and processes which are being or can be deployed in the AT space to increase access to AT globally. We conducted a scoping review of innovation strategies and processes in peer-reviewed literature databases and complemented this by identifying case studies demonstrating innovation strategies. The review includes WHO world region, publication year, AT type and a sector analysis against the Systems-Market for Assistive and Related Technologies Framework. We analyzed the case studies and interviews using thematic analysis. We included 91 papers out of 3,127 after review along with 72 case studies. Our results showed that product innovations were more prevalent than provision or supply innovations across papers and case studies. Case studies yielded two themes: open innovation (OI); radical and disruptive innovation. Financial instruments which encourage OI are needed and we recommend pursuing OI for AT innovation. Embedding AT within larger societal missions will be key to success governments and investors need to understand what AT is and their translational socioeconomic value.

Cultural influences on perception of disability and disabled people: a comparison of opinions from students in the United Kingdom (UK) Pakistan (PAK) about a generic wheelchair using a semantic differential scale.

Assistive Technology (AT) product use occurs within a socio-cultural setting. The growth internationally in the AT product market suggests that designers need to be aware of the influences that diverse cultures may have on the societal perception of an AT product through its semantic attributes. The study aimed to evaluate the visual interaction with an AT product by young adults from Pakistan, a collectivist society, and the United Kingdom (UK), an individualist society. A paper-based questionnaire survey was carried out with 281 first-year undergraduate students from the UK and Pakistan to evaluate their perception towards the visual representation of a generic conventional wheelchair image. A semantics differential (SD) scale method was used involving a seven-point bipolar SD scale incorporating sixteen pairs of adjectives defining functional, meaning, and usability attributes of the product. The mean (M) and standard deviation (sd) values were obtained for each pair of adjectives and compared between both groups by employing appropriate parametric tests. The results show that having a diverse cultural background did not appear to have overtly influenced the meanings ascribed to the generic manual wheelchair, which was unexpected. The University 'Internationalist' environment may have influenced the results. Some minor but critical differences were found for some pairs of adjectives (bulky-compact, heavy-light), having p-value less than .05 (p < .05) that related to previous experience of wheelchairs and/or their use. Further studies are planned to investigate and validate outcomes with other student and non-student groups.Implications for RehabilitationThe semantic attributes of assistive technologies highlight a number of aspects that have implications for those involved in Assistive Technology (AT) product development, manufacturing and marketing.• For online sales, the AT products rely on the web page image to communicate the purpose and attributes of the product. There are limited explorations related to the semantic/communicative attributes of AT product presented in images, as perceived by individuals from diverse cultural backgrounds.• The knowledge towards semantic meaning ascribed to the AT product is important to investigate to provide a perspective that goes beyond practical functions of the AT product towards the communicative function.• Information of comprehending semantics and significance of the AT product from a social (non-users) viewpoint may benefits manufacturers in the development of AT products that best meet the societal needs, preferences and expectations.• A model of best practice, with a focus on semantic manipulation will offer Industrial Designers (ID) internationally with the suitable process and tools to reframe perceptions of disability and enhance acceptance of AT products not only for users, but also for the society around them.

The influence of social context on the perception of assistive technology: using a semantic differential scale to compare young adults' views from the United Kingdom and Pakistan.

Background and aim: A Society's view of disability may influence the perception and use of Assistive Technology (AT) products. Semantic cues or cultural coding provide the viewer with a series of visual stimuli to be given or ascribed meaning. Previous research has shown cognitive approaches to visual perception and assignment of meaning vary between diverse cultures. This study reviews the influence of contextual settings on perception, to provide the basis for a debate on the societal perception of communicative content (semantic/meaning) of an AT product; and, the relevance of different cultural cognitive styles. The paper explores, from a cultural viewpoint, the overall understanding of disability internationally.Method: A Semantic Differential (SD) scale was used to obtain views on the image of an attendant wheelchair from nine hundred and ninety-one (991) young adults from the United Kingdom (UK) and Pakistan (PAK), reflecting the individualist and collectivist societies, respectively. This survey follows a previous paper-based study using the same image and protocol. Comparing the two surveys, a consensus of views from the two groups was achieved.Results and conclusion: The responses from the UK group were skewed towards a negative view of disability compared to the Pakistan group. This inferred greater social stigma associated with this AT product in the UK. The combined findings from both surveys provide insights into societal perception of AT products and disability. Areas for future research are suggested, including what visual components of an AT product (graphemes) appear to be associated with positive or negative responses for collectivist and individual societal groups.Implications for rehabilitationAssistive Technology (AT) product designers, academics, professionals and stakeholders need to be aware of challenges which are originated from one's socio-cultural environment. AT products convey certain meanings, semantics, which are interpreted by the society and are subjective to a specific cultural setting.•For the effective communication of meanings and values an AT product relies on the visual clues and design features embedded within the design. However, there have been a limited number of studies reviewing this aspect of product semantics.•The survey and associated testing has highlighted the differences in cultural perception towards AT products and demonstrated the importance of effectively designing the semantic attributes of an AT product as well as its function.•The demonstration of the efficacy of methods within the study for exploring the interpretation of semantic attributes of AT products will help designers and developers better understand the perceptions of individual cultures and societal groups.•A better understanding of different cultures and societies will enable designers and clinicians who specify AT products to reduce AT product abandonment; and, the associated stigma around disability.

The order and priority of research and design method application within an assistive technology new product development process: a summative content analysis of 20 case studies.

Summative content analysis was used to define methods and heuristics from each case study. The review process was in two parts: (1) A literature review to identify conventional research methods and (2) a summative content analysis of published case studies, based on the identified methods and heuristics to suggest an order and priority of where and when were used. Over 200 research and design methods and design heuristics were identified. From the review of the 20 case studies 42 were identified as being applied. The majority of methods and heuristics were applied in phase two, market choice. There appeared a disparity between the limited numbers of methods frequently used, under 10 within the 20 case studies, when hundreds were available. Implications for Rehabilitation The communication highlights a number of issues that have implication for those involved in assistive technology new product development: •The study defined over 200 well-established research and design methods and design heuristics that are available for use by those who specify and design assistive technology products, which provide a comprehensive reference list for practitioners in the field; •The review within the study suggests only a limited number of research and design methods are regularly used by industrial design focused assistive technology new product developers; and, •Debate is required within the practitioners working in this field to reflect on how a wider range of potentially more effective methods and heuristics may be incorporated into daily working practice.

Evaluation of an assistive technology product design using a paired comparisons method within a mixed methods approach: a case study evaluating preferences for four types of cutlery with 34 upper limb impaired participants.

The purpose of the study was the assessment of preferences for four types of assistive technology (AT) domestic cutlery with 24 female and 10 male participants who had a range of upper limb impairments. A mixed-methods methodology, that included a paired comparisons analysis, was used to inform product development. Qualitative and quantitative data collected at the time provided triangulation of cohort preferences and insight into the reasoning of the participants. The results indicate that a high friction surface on AT cutlery handles is useful for all upper limb impaired users; however, the unconventional shapes of the Caring Cutlery better match the grip patterns generated by those with arthritis. Conventionally shaped handles are favoured by those who generate conventional grip patterns. Statistical analysis of the paired comparisons results indicated a clear preference for the Caring Cutlery by those with arthritis. The Etan Cutlery set was favoured by those using one hand that predominantly had hemiplegia following a stroke. The paired comparisons method was used as part of a mixed methodology that was considered to be cost effective. The authors concluded that the methodology was useful to help validate a new inclusive/universal product design when the desired attributes are not accurately known.