Concept Introduction: Intelligent quotient (IQ) was derived by German psychologist William Stern. IQ is used as a method to assess intelligence. IQ is the ratio of a person’s mental age to a person’s chronological age and multiplied by 100.
Answer to Problem 1MM
Correct answer: The IQ of a 6-year-old with the measured mental age of 9 would be 150. Therefore, option d. is correct
Explanation of Solution
Reasons for the correct statement:
The formula for IQ is as follows:
The given information:
Mental age = 9 years
Chronological age = 6 years
Option d. is given as “150”
As IQ of a 6-year-old with the measured mental age of 9 would be 150, option d. is correct.
Reasons for the incorrect statements:
Option a. is given as “67”.
IQ of a 6-year-old with the measured mental age of 9 would be 150, not 67. So, option a. is incorrect.
Option b. is given as “133”.
IQ of a 6-year-old with the measured mental age of 9 would be 150, not 133. So, option b. is incorrect.
Option c. is given as “86”.
IQ of a 6-year-old with the measured mental age of 9 would be 150, not 86. So, option c. is incorrect.
Hence, options a., b., and c. are incorrect.
Want to see more full solutions like this?
Chapter 29 Solutions
Psychology in Modules
- Ciccarelli: Psychology_5 (5th Edition)PsychologyISBN:9780134477961Author:Saundra K. Ciccarelli, J. Noland WhitePublisher:PEARSONCognitive PsychologyPsychologyISBN:9781337408271Author:Goldstein, E. Bruce.Publisher:Cengage Learning,Introduction to Psychology: Gateways to Mind and ...PsychologyISBN:9781337565691Author:Dennis Coon, John O. Mitterer, Tanya S. MartiniPublisher:Cengage Learning
- Psychology in Your Life (Second Edition)PsychologyISBN:9780393265156Author:Sarah Grison, Michael GazzanigaPublisher:W. W. Norton & CompanyCognitive Psychology: Connecting Mind, Research a...PsychologyISBN:9781285763880Author:E. Bruce GoldsteinPublisher:Cengage LearningTheories of Personality (MindTap Course List)PsychologyISBN:9781305652958Author:Duane P. Schultz, Sydney Ellen SchultzPublisher:Cengage Learning