This observation might be repeated with regard to all objects of the outer world which enter into relation with us. Whether the knowledge of them be of the common-place or of a scientific order matters little. Sensation is its limit, and all objects are known to us by the sensations they produce in us, and are known to us solely in this manner. A landscape is nothing but a cluster of sensations. The outward form of a body is simply sensation; and the innermost and most delicate material structure, the last visible elements of a cell, for example, are all, in so far as we observe them with the microscope, nothing but sensation.
French psychologist and inventor of the first usable intelligence test
Alfred Binet (July 8, 1857 – October 18, 1911) was a French psychologist who invented the first practical intelligence test, the Binet-Simon scale, along with his collaborator Théodore Simon.
From: Wikiquote (CC BY-SA 4.0)
I wish that people would be persuaded that psychological experiments, especially those on the complex functions, are not improved (by large studies); the statistical method gives only mediocre results; some recent examples demonstrate that. The American authors, who love to do things big, often publish experiments that have been conducted on hundreds and thousands of people; they instinctively obey the prejudice that the persuasiveness of a work is proportional to the number of observations. This is only an illusion.
Mere numbers cannot bring out... the intimate essence of the experiment. This conviction comes naturally when one watches a subject at work ... What things can happen! What reflections, what remarks, what feelings, or, on the other hand, what blind automatism, what absence of ideas!... The experimenter judges what may be going on in (the subject’s) mind, and certainly feels difficulty in expressing all the oscillations of a thought in a simple, brutal number, which can have only a deceptive precision. How, in fact, could it sum up what would need several pages of description!
It is necessary to protect oneself from over exaggeration; one must not suppose that there exists, even in the realm of partial memory, an absolutely pure auditory type; real life does not make such schemas... In reality, when one says that a person belongs to the auditory type... one wants to say simply that with regard to that person the auditory memory is preponderant.