IQ has played a prominent part in developmental and adult psychology for decades. In the absence of a clear theoretical model of internal cognitive functions, however, construct validity for IQ tests has always been difficult to establish. Test validity, therefore, has always been indirect, by correlating individual differences in test scores with what are assumed to be other criteria of intell...

BACKGROUND Validation is the process of providing evidence that tests and questionnaires are adequately and appropriately fulfilling the purposes for which they are developed. In this special issue, experts from several countries describe specific approaches to test validation and provide examples of their approach. These approaches and examples illustrate the validation framework implied by th...

Introduction—essential background and study question 1–2 sentences Methods—setting, participants, and research design Several sentences Results—the major findings Several sentences Conclusions—the answer to the study question 1–2 sentences Introduction Why topic is important to the readers of this journal 1–3 sentences Research or evidence gap that exists 1–2 paragraphs Research hypothesis or q...

I was pleased to see that Occupational Medicine thought it appropriate to publish an editorial on ethical publication [1]. It is important that the ethics of research and publication remain in the consciousness of occupational physicians. This is particularly so where they are actively involved in occupational medicine research and therefore the ethical treatment of workers who participate in s...