The stability of IQ in people with low intellectual ability: an analysis of the literature.
نویسنده
چکیده
A meta-analysis of the stability of low IQ (IQ < 80) was performed on IQ tests that have been commonly used--tests that were derived by D. Wechsler (1949, 1955, 1974, 1981, 1991, 1997) and those based on the Binet scales (L. M. Terman, 1960; L. M. Terman & Merrill, 1972). Weighted-mean stability coefficients of .77 and .78 were found for Verbal IQ (V IQ) and Performance IQ (P IQ) on the Wechsler tests and .82 for Full-Scale IQ (FS IQ) on both Wechsler and Binet tests, for a mean test-retest interval of 2.8 years. Although the majority of FS IQs changed by less than 6 points, 14% changed by 10 points or more. The author suggests that the results of IQ assessment should be treated with more caution than previously thought.
منابع مشابه
Leisure time and recretional activities for people with intellectual disabilities: literature review of its nature, barriers, strategies and effects
Abstract: Background and Aim: In the contemporary world, investigation about how to spend leisure time and participating in recreational activities along with the researches concerning work and its effects has been paid attention to by many authors. The aim of the present paper is to investigate the quality of leisure time and the role of recreational activities in the life of people with inte...
متن کاملEvaluating the use of the Child and Adolescent Intellectual Disability Screening Questionnaire (CAIDS-Q) to estimate IQ in children with low intellectual ability.
In situations where completing a full intellectual assessment is not possible or desirable the clinician or researcher may require an alternative means of accurately estimating intellectual functioning. There has been limited research in the use of proxy IQ measures in children with an intellectual disability or low IQ. The present study aimed to provide a means of converting total scores from ...
متن کاملGender Diversity in Management Positions and Organizational Performance: A Review of Literature
In this term paper, diversity in management positions and organizational performance is analyzed using gender diversity as a mediating role. The analysis is done based on the review of related literature. An organization’s success and competitiveness depends upon its ability to embrace diversity and realize the benefits. The success and failure of an organization is also linked with its leaders...
متن کاملAnalyzing the Intellectual and Military Relations Between Daylamites and Alawites based on the Divergence and Convergence Theory
People of Daylaman and Gilan, due to their opposition to the Umayyad and Abbasid caliphs, were not compatible to them. In order to spread their protest movement, the people of Daylaman did support the Alawites who had emerged as an ideological and political alternative to the Abbasids. During the early years of taking power, the people were able to have some important achievements in Gilan and ...
متن کاملبررسی کنش‌های شناختی دانش‌آموزان دارای لکنت
Objective Stuttering is one of the most common speech disorders that generate many complications in children and adults. This disorder involves behavioral, cognitive and emotional interactions. So, the purpose of the current study is to investigate the cognitive functions of students with stuttering. Materials & Methods A descriptive study, comprising of 30 students (8 females and 22 males) fr...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Intellectual and developmental disabilities
دوره 46 2 شماره
صفحات -
تاریخ انتشار 2008