Need-solution pair recognition by household sector individuals: Evidence,and a cognitive mechanism explanation

Problem-solving by everyday individuals is thought to occur as a two-step process. First, an individual identifies or formulates a problem, followed by entering into a subsequent search to find the best solution. Here, however, we consider an alternative process that everyday individuals may use for solution finding first theorized by von Hippel and von Krogh (2016). Specifically, von Hippel and von Krogh proposed that everyday individuals may sometimes discover a solution and the need it satisfies simultaneously without the need for apriori problem formation, a cognitive process they called “need-solution pair recognition”. Utilizing a rich literature from psychology and neuroscience, we propose that seemingly spontaneous discoveries found by need-solution pair recognition are natural products of the object recognition system and its underlying mechanisms. This view asserts that on encountering an object and reasoning how it might be used (i.e. functional object understanding), an individual's perception of an object may culminate in recognizing the object as a solution, and in some cases, as a solution to a problem previously unknown to him or her, thus bypassing formal problem-formulation and active solution searching entirely. To empirically test this view, we manipulated the ability of everyday individuals to functionally reason about objects while we examined the spontaneous occurrence of solutions found by either need-solution pair recognition or traditional problem-first problem-solving. Consistent with our hypothesized mechanism, our results indicate that need-solution pair recognition occurs more frequently when constraints on functional object understanding are reduced. That is, we found that needsolution pair discoveries outpaced solutions found from traditional problem solving, in environments with unfamiliar objects, where participants were not directed to solve specific problems. Our results provide clear evidence that everyday individuals in the household sector do not always innovate through traditional problem-solving processes, but instead may arrive at solutions as they recognize and reason about objects. Implications for research and practice in household innovation, and for innovation more generally are considered.     

Theoretical Foundations of Phenomenography

In this article the concepts of research tradition, research programme, research tool and research orientation are used to clarify the character of phenomenography. Phenomenography is said to be fundamentally a research orientation and to be characterised by the delimitation of an aim in relation to a kind of object. The aim is to describe and the kind of object is a conception. Phenomenographic research also has common characteristics of method of a general kind related to the orientation and these are called a research approach. The orientation and approach together are said to represent a research specialisation. The historical roots and the ontological, epistemological and methodological assumptions of this research specialisation are described and summarised. Lastly, phenomenography is described as a reaction against and an alternative to dominant positivistic, behaviouristic and quantitative research and as making its own ontological, epistemological and methodological assumptions with inspiration from, and similarities to, several older and concomitant traditions, without agreeing entirely with any of those.     

Effects of Mobile Phones on Children's and Adolescents’ Health: A Commentary

The use of digital technology has grown rapidly during the last couple of decades. During use, mobile phones and cordless phones emit radiofrequency (RF) radiation. No previous generation has been exposed during childhood and adolescence to this kind of radiation. The brain is the main target organ for RF emissions from the handheld wireless phone. An evaluation of the scientific evidence on the brain tumor risk was made in May 2011 by the International Agency for Research on Cancer at World Health Organization. The scientific panel reached the conclusion that RF radiation from devices that emit nonionizing RF radiation in the frequency range 30 kHz–300 GHz is a Group 2B, that is, a “possible” human carcinogen. With respect to health implications of digital (wireless) technologies, it is of importance that neurological diseases, physiological addiction, cognition, sleep, and behavioral problems are considered in addition to cancer. Well‐being needs to be carefully evaluated as an effect of changed behavior in children and adolescents through their interactions with modern digital technologies.     

Three dimensional musculoskeletal modelling of the seated biceps curl resistance training exercise

The aim of this study was to evaluate the benefits and limitations of using three dimensional (3D) musculoskeletal modelling (LifeModeler?) in assessing the safety and efficacy of exercising on a seated biceps curl resistance training machine. Three anthropometric cases were studied, representing a 5^th percentile female, 50^th percentile and 95^th percentile male. Results indicated that the LifeModeler? default model was not adequate to solve the forward dynamics simulations. Therefore adjustments had to be made to the default model to successfully complete the forward dynamics simulations. The software was able to sufficiently highlight the shortcomings of the biceps curl machine's engineered adjustability in relation to the anthropometric dimensions of the studied cases, as the 5^th percentile female could not be accommodated suitably on the machine. High lumbar spine anterior/posterior shear forces for all anthropometric cases and maximum muscle tensions for the female and 50^th percentile male indicate that the seated biceps curl exercise may pose risks for injuries. To conclude, it appears that 3D musculoskeletal modelling can be used to evaluate resistance training equipment such as the seated biceps curl machine. However the limitations as indicated by this study must be taken into consideration, especially when using the default LifeModeler? model.     

Family background variables as instruments for education in income regressions: A Bayesian analysis

The validity of family background variables instrumenting education in income regressions has been much criticized. In this paper, we use data from the 2004 German Socio-Economic Panel and Bayesian analysis to analyze to what degree violations of the strict validity assumption affect the estimation results. We show that, in case of moderate direct effects of the instrument on the dependent variable, the results do not deviate much from the benchmark case of no such effect (perfect validity of the instrument's exclusion restriction). In many cases, the size of the bias is smaller than the width of the 95% posterior interval for the effect of education on income. Thus, a violation of the strict validity assumption does not necessarily lead to results which are strongly different from those of the strict validity case. This finding provides confidence in the use of family background variables as instruments in income regressions.     

Subject matter attributes and study interests in post-secondary education

MBA students rated their interests in eight subject areas and evaluated them in several aspects, such as logical appeal and contribution of perceived competence in a subject area due to self esteem. Affective reactions to the areas, and attitudes to grading and to surface vs depth learning were also measured. Interest was most strongly related to logical appeal of the subject area. LISREL modelling of the structure of the relationships showed that logical appeal, being intimately related to the contribution of competence to self esteem, occupied a central position. Interest was determined by several variables but had no further consequences in the model. Students who expressed a depth orientation to their work were more positive generally, more interested and invested more effort in their work.