Measuring cognition

5 important questions on Measuring cognition

What is the difference between physical and cognitive phenotype?

Physical phenotype is observable, like haircolour. Cognitive phenotype is not observable, like character traits.

What are the two different kind of traits?

Monogenetic: due to one gene
Polygenetic: due to more genes

What was wrong with genetic association analysis?

This was a not parsimonious model > vage
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What are genome wide association studies?

They look at many different people, with big samples. But they only look at statistical of genetic issues

What are the different kinds op operationalisations? Explain.

Latent trait / common cause/ natural kind: a latent trait is a trait that cannot be naturally observed. The latent disease is unchanching and has sharp boundaris of a specific cause. The diagnosis is set specifically and all members of the disease have specific intrinsic properties.


Symptom level: a disease is marked upon the symptoms it shows. Together those symptoms form the disease

Network model: more genes are involved, with overlapping with other disease. Not specific traits are looked for.

Dynamic system: a fixed rule describes the relationship between two or more factors.

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