According to some researchers, dyscalculia is at least as prevalent as dyslexia. Somewhere between 3.6-6 % of all pupils have specific mathematics difficulties named dyslexia. If this be true, it should present the most complex special education predicament by far in schools today. Despite the statistics, dyscalculia is still a rather unknown concept. The cause of dyscalculia is not yet fully analyzed. There are several theories and many researchers see similarities between dyscalculia and the special educational problem of reading and writing, dyslexia. The most important factor for pupils to be able to develop mathematical skills is adequate assistance at the earliest possible stage. It is probable that this adequate assistance is achieved if the pupil is diagnosed with dyscalculia and therefore gets access to a special educational resources. In this essay, I want to analyze the concept of dyscalculia and how recognized it is today. To this end, I have undertaken several interviews with the objective of seeing how educationalists relate to dyscalculia. In order to see how the diagnosis is performed, and what it means to be diagnosed, I have followed the work process from a pupil suspected of having dyscalculia to a possible diagnosis. I have also personally undergone a dyscalculia investigation at an authorized speech therapist in order to achieve a profound insight into the diagnosis process. My study shows that the concept of dyscalculia is not widely recognized, but that the knowledge around dyscalculia is increasing. Research is currently undertaken in the field even though it is not to the same extent as dyslexia.

During the past three decades the economic performances of South Africa organisations were poor. This poor performance forced a lot of South African organisations to look at the way they do business. A method to analyse the way business is conducted through an Organisation Diagnose. Organisation Diagnose is the process of using concepts and methods from the social and behavioural sciences to assess the current state of an entire organisation and to find ways to improve the organisations effectiveness. The aim of this research was to evaluate perceptions of employees of a distribution organisation through an Organisation Diagnose. A cross-sectional design was used as model for the research. Interviews and questionnaires were used as methods for data gathering. A representative sample (N=30) from different job levels and departments were interviewed. The main themes were identified and these themes were included in the questionnaire as dimensions. The Study population (N=88) was chosen from a depot of a distributing organisation. The empirical investigation was aimed at establishing the reliability and validity of the derived questionnaire and to determine the important dimensions to be focused on with regards to interventions. The results of the empirical study showed that employees of a depot of a distributing organisation tend to have positive perceptions about supervision, remuneration and change organisations. The research also showed that employees of a depot of a distributing organisation tend to have negative perceptions about interpersonal relationships and promotion. The research also indicated a large number of factors that was considered as neutral. This can be an indication that employees of a depot of a distribution organisation may have a lack of motivation. Finally suggestions for future research were made. / Thesis (M.Com. (Industrial Psychology))--Potchefstroom University for Christian Higher Education, 2003.

During the past three decades the economic performances of South Africa organisations were poor. This poor performance forced a lot of South African organisations to look at the way they do business. A method to analyse the way business is conducted through an Organisation Diagnose. Organisation Diagnose is the process of using concepts and methods from the social and behavioural sciences to assess the current state of an entire organisation and to find ways to improve the organisations effectiveness. The aim of this research was to evaluate perceptions of employees of a distribution organisation through an Organisation Diagnose. A cross-sectional design was used as model for the research. Interviews and questionnaires were used as methods for data gathering. A representative sample (N=30) from different job levels and departments were interviewed. The main themes were identified and these themes were included in the questionnaire as dimensions. The Study population (N=88) was chosen from a depot of a distributing organisation. The empirical investigation was aimed at establishing the reliability and validity of the derived questionnaire and to determine the important dimensions to be focused on with regards to interventions. The results of the empirical study showed that employees of a depot of a distributing organisation tend to have positive perceptions about supervision, remuneration and change organisations. The research also showed that employees of a depot of a distributing organisation tend to have negative perceptions about interpersonal relationships and promotion. The research also indicated a large number of factors that was considered as neutral. This can be an indication that employees of a depot of a distribution organisation may have a lack of motivation. Finally suggestions for future research were made. / Thesis (M.Com. (Industrial Psychology))--Potchefstroom University for Christian Higher Education, 2003.

Proefschrift Universiteit van Amsterdam. / Met lit. opg. - Met samenvatting in het Nederlands.

Zugl.: Erfurt, University, Diss., 2006.

Proefschrift Universiteit van Amsterdam.

Proefschrift Universiteit van Amsterdam. / Met een Nederlandse samenvatting.

Zugl.: Erlangen, Nürnberg, Univ., Diss., 2007

Heidelberg, Univ., Diss., 2000.

Stuttgart, Univ., Diss., 2002.