Development of Measured Intelligence (3)
There are a number of research methods that have been used to investigate the relative importance of genes and environment in the development of intelligence:
Twin and family studies
Genetic studies
Enrichment Studies
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Development of Measured Intelligence
Typically, IQ tests measure:
Spatial ability
Visualisation and mental manipulation of shapes or objects
Mathematical ability
Logic and problem solving
Language ability
Vocabulary – sentence completion
Memory ability
Storage and retrieval of information
Published in
Development of Measured Intelligence
IQ stands for Intelligence Quotient, which is a number that represents how intelligent a person is. It is calculated by comparing a person’s mental age (MA) with their chronological (actual) age (CA) using the following formula:
IQ = MA/CA ×100
Mental age is calculated by giving tests to thousands of people of different ages, this makes it possible to see how the average 12 year old, for example, performs on the test. Someone who performs at the same level as a 12 year old would have a mental age of 12. Likewise, someone who performs at the same level as a 24 year old would have a mental age of 24.
Applying the formula: if a 12 year old has a mental age of 12 they have a normal IQ of 100, but a 24 year old with a mental age of 12 would have an IQ of 50 and would be considered to have learning difficulties.
Published in
Development of Measured Intelligence
