IQ test scores - how reliable are they and what do they tell us?

Introduction

IQ tests were invented by Alfred Binet (1857-1911). Binet was fascinated by the study of mental abilities and disabilities, and sought to understand whether intelligence was affected by class and economic environment. The tests were developed to test and measure intellectual aptitude and were particularly focused on the abilities of judgment, comprehension and reasoning.

Application of IQ Tests

Today, IQ test scores are used to determine academic aptitude and suitability for some jobs. But are they really a reliable measure of overall intelligence??It has been proven that IQ test scores can vary by as much as 15 points based on certain factors which include:

• Applicant