In 1905, Alfred Binet and Theodore Simon,made the first successful attempt toformally measure intelligence. In 1908,when the scale was revised, they gave theconcept of Mental Age (MA), which is ameasure of a person’s intellectualdevelopment relative to people of her/hisage group. A mental age of 5 means thata child’s performance on an intelligencetest equals the average performance levelof a group of 5-year olds. ChronologicalAge (CA) is the biological age from birth.A bright child’s MA is more than her/hisCA; for a dull child, MA is below the CA.Retardation was defined by Binet andSimon as being two mental age years belowthe chronological age.In 1912, William Stern, a Ger manpsychologist, devised the concept ofIntelligence Quotient (IQ). IQ refers tomental age divided by chronological age,and multiplied by 100.IQ = ´ 100The number 100 is used as a multiplierto avoid the decimal point. When the MAequals the CA, the IQ equals 100. If MA ismore than the CA, IQ is more than 100. IQbecomes less than 100 when the MA is lessthan the CA. For example, a10-year-old child with a mental age of 12would have an IQ of 120 (12/10 ´ 100),MACA

A significant contribution of modern measures on intelligence such as the Wechsler scales is that they: abandoned the concept of mental age, and instead calculated IQ as an individual’s position relative to peers of the same age created a means by which to measure the seven main factors involved in an individual’s intelligence Not only measured the intelligence of groups of individuals, but also provided insight into group testing results. invented the frequency distribution as a way of calculating an individual’s mental age as opposed to his/her chronological age

A child with a chronological age of 6 and a mental age of 12 would have an intelligence quotient (IQ) scoreMultiple choice question.lower than 100.right around 100.higher than 100.that could only be computed with more information.

According to Binet, high intelligence would be reflected in a mental ageMultiple choice question.that equals the person's chronological age.considerably above chronological age.considerably below chronological age.

A child is given the intelligence test devised by Alfred Binet. What does the child's score on the test correspond to?Multiple choice question.their mental agetheir interpersonal intelligencea normal distributiontheir chronological age

Which of the following is not true of the term IQ?Question 5Select one:a.Intelligence test scores of today are always based on the old formula of comparing a child’s mental age to their chronological ageb.Intelligence test scores of today are determined by comparing a person’s performance on the test with the performance of others in the same age groupc.Scores near 100 are average