There was a proposed theory of primary mental abilities given by Thurstone. This theory isn't broadly utilized today, the theory forms the premise of numerous contemporary hypotheses, including those of Gardner and Carroll. It is additionally the reason for some, contemporary gathering trial of intelligence, which contain things generally of the sorts that will be portray.

Thurstone broke down the information from 56 distinct trial of mental abilities and presumed that to the degree that there is a general factor of intelligence, it is insignificant and potentially epiphenomenal.

6 Primary Mental Abilities

• Verbal comprehension
• Verbal fluency
• Number
• Perceptual speed
• Inductive reasoning
• Spatial visualization

Verbal comprehension
This factor includes a man's capacity to comprehend verbal material. It is estimated by tests, for example, vocabulary and perusing comprehension.

Verbal fluency
This capacity is engaged with quickly delivering words, sentences, and other verbal material. It is estimated by tests, for example, one that requires the examinee to create whatever number words as could be expected under the circumstances starting with a specific letter in a short measure of time.

Number
This capacity is associated with quick arithmetic calculation and in taking care of straightforward arithmetic word problems.

Perceptual speed
This capacity is associated with editing and in quick acknowledgment of letters and numbers. It is estimated by tests, for example, those requiring the intersection out of As in a long string of letters or in tests requiring acknowledgment of which of a few pictures at the right is indistinguishable to the photo at the left.

Inductive reasoning
This capacity requires generalization reasoning from the particular to the general. It is estimated by tests, for example, letter arrangement, number arrangement, and word characterizations, in which the examinee must show which of a few words does not have a place with the others.

Spatial visualization
This capacity is associated with envisioning shapes, turns of items, and how bits of a puzzle fit together. A case of a test would be the introduction of a geometric form took after by a few other geometric forms.

Each of the forms that takes after the first is either the same turned by some inflexible transformation or the mirror image of the first form in revolution. The examinee needs to demonstrate which of the forms at the right is a pivoted rendition of the form at the left, instead of a mirror image.

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Reference:
https://en.wikipedia.org/wiki/Intelligence
http://psychiatry-psychology.ro/file/Stiintele%20Comportamentului%20ENG/Lecture4_Mental_Abilities.pdf
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1114486