• Summary
  • Contents
  • Subject index

The Handbook of Understanding and Measuring Intelligence provides an overview of recent studies on intelligence to help readers develop a sound understanding of results and perspectives in intelligence research. In this volume, editors Oliver Wilhelm and Randall W. Engle bring together a group of respected experts from two fields of intelligence research, cognition and methods, to summarize, review, and evaluate research in their areas of expertise. The chapters in this book present state-of-the-art examinations of a particular domain of intelligence research and highlight important methodological considerations, theoretical claims, and pervasive problems in the field.  

Development of Intellectual Abilities in Old Age: From Age Gradients to Individuals
Development of intellectual abilities in old age: From age gradients to individuals

The present chapter has two main objectives: (a) to summarize psychometric theorizing and evidence about intelligence in adulthood and old age and (b) to promote a person-centered (idiographic) approach to the psychometric study of adult intellectual development. Both objectives can be framed in the context of two-component models of life span cognition. These models posit that life span development of intellectual abilities reflects two fundamental and dynamically interacting influences, the biological and the cultural. Historical examples of such models can be found in Tetens's (1777) differentiation between relative and absolute mental capabilities and in Hebb's (1949) distinction between intellectual power and intellectual ...

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