Towards a Philosophy of Software Development: 40 Years after the Birth of Software Engineering

Over the past four decades, software engineering has emerged as a discipline in its own right, though it has roots both in computer science and in classical engineering. Its philosophical foundations and premises are not yet well understood. In recent times, members of the software engineering community have started to search for such foundations. In particular, the philosophies of Kuhn and Popper have been used by philosophically-minded software engineers in search of a deeper understanding of their discipline. It seems, however, that professional philosophers of science are not yet aware of this new discourse within the field of software engineering. Therefore, this article aims to reflect critically upon recent software engineers’ attempts towards a philosophy of software engineering and to introduce our own philosophical thoughts in this context. Finally, we invite the professional philosophers of science to participate in this interesting new discourse.

Implicit learning for probable changes in a visual change detection task

Previous research demonstrates that implicitly learned probability information can guide visual attention. We examined whether the probability of an object changing can be implicitly learned and then used to improve change detection performance. In a series of six experiments, participants completed 120–130 training change detection trials. In four of the experiments the object that changed color was the same shape (trained shape) on every trial. Participants were not explicitly aware of this change probability manipulation and change detection performance was not improved for the trained shape versus untrained shapes. In two of the experiments, the object that changed color was always in the same general location (trained location). Although participants were not explicitly aware of the change probability, implicit knowledge of it did improve change detection performance in the trained location. These results indicate that improved change detection performance through implicitly learned change probability occurs for location but not shape.     

La santé à l’épreuve de la mobilité : les débuts de parcours de compagnons de l’aéronautique

In this article we relate a research, which has been carried out among workers in an aircraft-manufacturing site. The purpose of the research was to enlighten the links between health and professional mobility. Leaning on quantitative and qualitative analyzes of mobility inside a worksite, we put forward the complex network of itineraries of blue collars, at their beginning. These itineraries combine changes in workstations or in working conditions, and various individual, collective or organizational dimensions. The apprenticeship of mobility frameworks gets involved in wider series of professional norms, which might at the same time prevent from health disorders and make them less visible. Thus, the integration of these various temporal dimensions by blue collars themselves brings depending on organizational context, supports or damages for health.     

Visual marking and change detection

The preview benefit from prior exposure of response-irrelevant (distracter) objects in visual search has been accounted for in terms of top-down inhibition (i.e. visual marking), bottom-up abrupt onset capture, or asynchrony-dependent perceptual segregation. We assess the relative contribution of abrupt onset and visual marking in a paradigm combining visual search with a visual working memory task. We investigated time-based selection of multiple objects for storage in visual working memory, using a change detection paradigm (Luck and Vogel in Nature 390:279–281, 1997) with distracter preview. We varied preview exposure (short vs. long), in a series of three experiments. The contribution of asynchrony-related perceptual segregation was assessed across experiments by varying the complexity of the stimuli (colored squares, oriented bars and oriented T-shapes) and the type of change detection (color or orientation), resulting in different levels of perceptual segregation between visual elements. The results suggest that bottom-up abrupt onset, visual marking and perceptual segregation factors co-operate in time-based selection for storage in visual working memory.     

Stability and changes in health behaviours in young adults over a one year period

Abstract

Data concerning 19 health-related behaviours and associated beliefs were collected by questionnaire from 282 students in the Netherlands on two occasions over one year. While all behaviours showed moderate stability, there were variations in the degree of change. The highest stability was reported for sleep time, tooth brushing frequency, seat belt usage and health care service utilization. The least stable behaviours included regular exercise and various dietary measures. Predictors of changes in smoking, dietary fat intake, alcohol consumption and regular exercise were analysed in detail. Beliefs assessed at year 1 in the importance of these activities for health predicted changes in behaviour over the study year independently of prior behaviour levels. Awareness of the risks associated with behaviours, and explicit wishes to modify behaviour patterns (eg stop smoking, exercise more), did not predict change from year 1 to year 2. The results indicated that health behaviours vary in their stability, and that health beliefs may predict future health behaviour changes.     

The reminiscence bump is blind to blindness: Evidence from sound- and odor-evoked autobiographical memory

The reminiscence bump is the disproportionally high reporting of autobiographical memories from adolescence and early adulthood and is typically observed when memories are evoked by cues, such as words, pictures, and sounds. However, when odors are used the bump shifts to early childhood. Although these findings indicate that sensory modality affects the bump, the influence of the individual’s sensory function on the reminiscence bumps is unknown. We examined the reminiscence bumps of sound- and odor-evoked autobiographical memories of early blind and sighted individuals, since early blindness implies considerable effects on sensory experience. Despite differences in sensory experience between blind and sighted individuals, the groups displayed similar age distributions of both sound- and odor-evoked memories. The auditory bump spanned the first two decades of life, whereas the olfactory bump was once again found in early childhood. These results demonstrate that the reminiscence bumps are robust to fundamental differences in sensory experience.     

How something can be said about telling more than we can know: on choice blindness and introspection

The legacy of Nisbett and Wilson’s classic article, Telling More Than We Can Know: Verbal Reports on Mental Processes (1977), is mixed. It is perhaps the most cited article in the recent history of consciousness studies, yet no empirical research program currently exists that continues the work presented in the article. To remedy this, we have introduced an experimental paradigm we call choice blindness [Johansson, P., Hall, L., Sikström, S., &; Olsson, A. (2005). Failure to detect mismatches between intention and outcome in a simple decision task. Science, 310(5745), 116–119.]. In the choice blindness paradigm participants fail to notice mismatches between their intended choice and the outcome they are presented with, while nevertheless offering introspectively derived reasons for why they chose the way they did. In this article, we use word-frequency and latent semantic analysis (LSA) to investigate a corpus of introspective reports collected within the choice blindness paradigm. We contrast the introspective reasons given in non-manipulated vs. manipulated trials, but find very few differences between these two groups of reports.     

Universal Prevention Exposure as a Moderator of the Community Context: Findings from the PROSPER Project

This study examined how participation in a universal family skills‐building program may interact with community risks and resources to produce youth outcomes. Prior research has noted community‐level variability in risk and protective factors, but thus far no study has examined the role that participation on a community‐wide intervention may play in moderating the effects of community risks or resources. The study included 14 communities (seven in Iowa, seven in Pennsylvania) that implemented a family focused evidence‐based program as part of the PROSPER project. Community level variables included both risk factors (percent of low income families, the availability of alcohol and tobacco, norms regarding adolescent substance use, incidence of drug‐related crimes) and community resources (proactive school leadership, availability of youth‐serving organizations, and student involvement in youth activities). The proximal youth and family outcomes included youth perceptions of their parents’ management skills, parent–child activities, and family cohesion. Results indicated that the Strengthening Families Program:10–14 may have moderated the impact of the community risks and resources on community‐level youth outcomes; risk levels meaningfully associated with community‐level change in program participants, though these results varied somewhat by outcome. Generally, higher levels of resources also meaningfully associated with more positive change after participating in the family‐focused intervention. These results suggest that the effect of some evidence‐based programs may be even stronger in some communities than others; more research in this area is needed.     

Disbelief and Trust in Psychoanalysis - A Case Study

A case of unorthodox psychoanalysis with a 27-year-old woman, during the years 1994-1998 is presented. The patient, Silja, suffered from severe character neurosis with depression. She studied humanities at the University of Helsinki with poor results, because of severe inner demands of perfection. The therapy was unorthodox, because it was necessary to change the method a few times. After two years of psychoanalysis, a life-threatening crisis occurred in 1996, and I was obliged to take a more active role and even give direct advice concerning her studies. This was successful, and she could achieve her B.A., the lower university degree. The change of method was necessary to avoid suicide. In the end we could resume psychoanalysis and analyse what had happened. Suddenly in the summer of 1998 Silja's depression disappeared and her looks improved. Therapy ended in November 1998, when she was ready to try on her own. According to her both the holding and love and also the direct advice were the most important elements in her cure. After a three years' follow-up her condition had further improved, she was married, had a job and was expecting a baby.