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Problem children have great difficulties, as well to study any kind of language as to study mathematics. Papy F. and Papy G. have described a method to teach mathematics in the primary school. This method, based upon a non verbal language, has been applied to several groups of problem children. It gave them the opportunity to progress a lot in mathematics.
We study now the (possible) influence of this method on the evolution of their language and so of their psycho-pathological behaviour.

A computer-generated index to the Human Relations Area Files offers a needed tool for accessing the vast amounts of information in the Files. Donald Morrison is a graduate student in Applied Mathematics and is a Research Associate for the Council for Intersocietal Studies, Northwestern University.

Even yet I suppose many economists are taught how to discuss
problems rather than how to solve them. It is not surprising, therefore,
that even in the analyses of investment projects, where the economist
might have been thought to be the expert, mathematicians, scientists and
statisticians have often been able to make a much more constructive and
profitable contribution than the economist. 'Operations Research' is the
mixture of mathematics, quantitative insight, and common sense that is
coming to be used to solve many of the more complex problems of industry
and government. Professor Hanssmann sets out to explain, without too
much mathematics and with plenty of illustrative case studies, how these
methods can be applied to investment decisions.

Book reviewed in this article:Introduction to Probability and Mathematical Statistics, Z. W. BirnbaumThe Paper Industry and European Integration, R. BolaffiMethods of least squares and principles of the theory of observations, Yu. V. LinnikFundamentals of Scientific Mathematics, George E. OwenDecomposition of Superpositions of Distribution Functions, P. MedgyessyMathematical Methods and Theory in Games, Programming and Economics, S. K. arlinStatistical Analysis and Optimization of Systems, E. L. PetersonStudies in applied probability and management science, edited by Kenneth J. Arrow, Samuel Karlin and Herbert Scarf