Alexandre N. Tuch

Bio: Alexandre N. Tuch is an academic researcher from University of Basel. The author has contributed to research in topics: Web design & User experience design. The author has an hindex of 19, co-authored 35 publications receiving 2488 citations. Previous affiliations of Alexandre N. Tuch include University of Copenhagen & University of Trier.

Towards understanding the effects of individual gamification elements on intrinsic motivation and performance

Abstract: Research on the effectiveness of gamification has proliferated over the last few years, but the underlying motivational mechanisms have only recently become object of empirical research It has been suggested that when perceived as informational, gamification elements, such as points, levels and leaderboards, may afford feelings of competence and hence enhance intrinsic motivation and promote performance gains We conducted a 24 online experiment that systematically examined how points, leaderboards and levels, as well as participants' goal causality orientation influence intrinsic motivation, competence and performance (tag quantity and quality) in an image annotation task Compared to a control condition, game elements did not significantly affect competence or intrinsic motivation, irrespective of participants' causality orientation However, participants' performance did not mirror their intrinsic motivation, as points, and especially levels and leaderboard led to a significantly higher amount of tags generated compared to the control group These findings suggest that in this particular study context, points, levels and leaderboards functioned as extrinsic incentives, effective only for promoting performance quantity We experimentally studied the effects of individual game elements on motivation and performanceGamification increased the number of tags in an image annotation taskGamification did not affect intrinsic motivation or competence need satisfactionLack of motivational effects likely due to the way gamification was implementedResults suggest that in the given context game elements acted as extrinsic incentives

Do points, levels and leaderboards harm intrinsic motivation?: an empirical analysis of common gamification elements

Abstract: It is heavily debated within the gamification community whether specific game elements may actually undermine users' intrinsic motivation. This online experiment examined the effects of three commonly employed game design elements -- points, leaderboard, levels -- on users' performance, intrinsic motivation, perceived autonomy and competence in an image annotation task. Implementation of these game elements significantly increased performance, but did not affect perceived autonomy, competence or intrinsic motivation. Our findings suggest that points, levels and leaderboards by themselves neither make nor break users' intrinsic motivation in non-game contexts. Instead, it is assumed that they act as progress indicators, guiding and enhancing user performance. While more research on the contextual factors that may potentially mediate the effects of game elements on intrinsic motivation is required, it seems that the implementation of points, levels, and leaderboards is a viable means to promote specific user behavior in non-game contexts.

Is beautiful really usable? Toward understanding the relation between usability, aesthetics, and affect in HCI

Abstract: This paper analyzes the relation between usability and aesthetics. In a laboratory study, 80 participants used one of four different versions of the same online shop, differing in interface-aesthetics (low vs. high) and interface-usability (low vs. high). Participants had to find specific items and rate the shop before and after usage on perceived aesthetics and perceived usability, which were assessed using four validated instruments. Results show that aesthetics does not affect perceived usability. In contrast, usability has an effect on post-use perceived aesthetics. Our findings show that the ''what is beautiful is usable'' notion, which assumes that aesthetics enhances the perception of usability can be reversed under certain conditions (here: strong usability manipulation combined with a medium to large aesthetics manipulation). Furthermore, our results indicate that the user's affective experience with the usability of the shop might serve as a mediator variable within the aesthetics-usability relation: The frustration of poor usability lowers ratings on perceived aesthetics. The significance of the results is discussed in context of the existing research on the relation between aesthetics and usability.

Visual complexity of websites: Effects on users' experience, physiology, performance, and memory

Abstract: Visual complexity is an apparent feature in website design yet its effects on cognitive and emotional processing are not well understood. The current study examined website complexity within the framework of aesthetic theory and psychophysiological research on cognition and emotion. We hypothesized that increasing the complexity of websites would have a detrimental cognitive and emotional impact on users. In a passive viewing task (PVT) 36 website screenshots differing in their degree of complexity (operationalized by JPEG file size; correlation with complexity ratings in a preliminary study r=.80) were presented to 48 participants in randomized order. Additionally, a standardized visual search task (VST) assessing reaction times, and a one-week-delayed recognition task on these websites were conducted and participants rated all websites for arousal and valence. Psychophysiological responses were assessed during the PVT and VST. Visual complexity was related to increased experienced arousal, more negative valence appraisal, decreased heart rate, and increased facial muscle tension (musculus corrugator). Visual complexity resulted in increased reaction times in the VST and decreased recognition rates. Reaction times in the VST were related to increases in heart rate and electrodermal activity. These findings demonstrate that visual complexity of websites has multiple effects on human cognition and emotion, including experienced pleasure and arousal, facial expression, autonomic nervous system activation, task performance, and memory. It should thus be considered an important factor in website design.

The role of visual complexity and prototypicality regarding first impression of websites: Working towards understanding aesthetic judgments

Abstract: This paper experimentally investigates the role of visual complexity (VC) and prototypicality (PT) as design factors of websites, shaping users' first impressions by means of two studies. In the first study, 119 screenshots of real websites varying in VC (low vs. medium vs. high) and PT (low vs. high) were rated on perceived aesthetics. Screenshot presentation time was varied as a between-subject factor (50ms vs. 500ms vs. 1000ms). Results reveal that VC and PT affect participants' aesthetics ratings within the first 50ms of exposure. In the second study presentation times were shortened to 17, 33 and 50ms. Results suggest that VC and PT affect aesthetic perception even within 17ms, though the effect of PT is less pronounced than the one of VC. With increasing presentation time the effect of PT becomes as influential as the VC effect. This supports the reasoning of the information-processing stage model of aesthetic processing (Leder et al., 2004), where VC is processed at an earlier stage than PT. Overall, websites with low VC and high PT were perceived as highly appealing.

Remembering. A Study in Experimental and Social Psychology, Cambridge (University Press) 1964.

Abstract: Part I. Experimental Studies: 2. Experiment in psychology 3. Experiments on perceiving III Experiments on imaging 4-8. Experiments on remembering: (a) The method of description (b) The method of repeated reproduction (c) The method of picture writing (d) The method of serial reproduction (e) The method of serial reproduction picture material 9. Perceiving, recognizing, remembering 10. A theory of remembering 11. Images and their functions 12. Meaning Part II. Remembering as a Study in Social Psychology: 13. Social psychology 14. Social psychology and the matter of recall 15. Social psychology and the manner of recall 16. Conventionalism 17. The notion of a collective unconscious 18. The basis of social recall 19. A summary and some conclusions.

Narrative Methods for the Human Sciences

Abstract: Whatever our proffesion, narrative methods for the human sciences can be excellent source for reading. Locate the existing files of word, txt, kindle, ppt, zip, pdf, as well as rar in this site. You can definitely check out online or download this publication by right here. Now, never ever miss it. Searching for a lot of offered publication or reading source worldwide? We supply them all in layout kind as word, txt, kindle, pdf, zip, rar and ppt. among them is this qualified narrative methods for the human sciences that has actually been composed by Still confused how you can get it? Well, simply check out online or download by signing up in our website below. Click them. Our goal is always to offer you an assortment of cost-free ebooks too as aid resolve your troubles. We have got a considerable collection of totally free of expense Book for people from every single stroll of life. We have got tried our finest to gather a sizable library of preferred cost-free as well as paid files. GO TO THE TECHNICAL WRITING FOR AN EXPANDED TYPE OF THIS NARRATIVE METHODS FOR THE HUMAN SCIENCES, ALONG WITH A CORRECTLY FORMATTED VERSION OF THE INSTANCE MANUAL PAGE ABOVE.

The impact of online reviews on hotel booking intentions and perception of trust.

Abstract: A growing reliance on the Internet as an information source when making choices about tourism products raises the need for more research into electronic word of mouth. Within a hotel context, this study explores the role of four key factors that influence perceptions of trust and consumer choice. An experimental design is used to investigate four independent variables: the target of the review (core or interpersonal); overall valence of a set of reviews (positive or negative); framing of reviews (what comes first: negative or positive information); and whether or not a consumer generated numerical rating is provided together with the written text. Consumers seem to be more influenced by early negative information, especially when the overall set of reviews is negative. However, positively framed information together with numerical rating details increases both booking intentions and consumer trust. The results suggest that consumers tend to rely on easy-to-process information, when evaluating a hotel based upon reviews. Higher levels of trust are also evident when a positively framed set of reviews focused on interpersonal service.

Handbook Of Psychological Testing

Abstract: Thank you very much for reading handbook of psychological testing. As you may know, people have search hundreds times for their favorite readings like this handbook of psychological testing, but end up in infectious downloads. Rather than reading a good book with a cup of tea in the afternoon, instead they juggled with some infectious virus inside their laptop. handbook of psychological testing is available in our digital library an online access to it is set as public so you can download it instantly. Our digital library hosts in multiple countries, allowing you to get the most less latency time to download any of our books like this one. Kindly say, the handbook of psychological testing is universally compatible with any devices to read.

How gamification motivates

Abstract: The main aim of gamification, i.e. the implementation of game design elements in real-world contexts for non-gaming purposes, is to foster human motivation and performance in regard to a given activity. Previous research, although not entirely conclusive, generally supports the hypothesis underlying this aim. However, previous studies have often treated gamification as a generic construct, neglecting the fact that there are many different game design elements which can result in very diverse applications. Based on a self-determination theory framework, we present the results of a randomized controlled study that used an online simulation environment. We deliberately varied different configurations of game design elements, and analysed them in regard to their effect on the fulfilment of basic psychological needs. Our results show that badges, leaderboards, and performance graphs positively affect competence need satisfaction, as well as perceived task meaningfulness, while avatars, meaningful stories, and teammates affect experiences of social relatedness. Perceived decision freedom, however, could not be affected as intended. We interpret these findings as general support for our main hypothesis that gamification is not effective per se, but that specific game design elements have specific psychological effects. Consequences for further research, in particular the importance of treatment checks, are discussed. Motivational effects of gamification are analysed from an educational psychology perspective.Gamification is not effective per se, but different game design elements can trigger different motivational outcomes.A self-determination theory framework was used to study the effects of different configurations of game design elements.Competence and autonomy regarding task meaningfulness was affected by badges, leaderboards, and performance graphs.Social relatedness was positively influenced by avatars, a meaningful story, and teammates.