Bias can be simultaneously an adjective and a common name, which designates what is oblique, bent or diverted. The term is therefore used to refer to anything cut at an angle (to the real or figurative meaning), bent or disregarded or even different.
In addition to the side oblique or hijacked, the concept also takes symbolic meaning to mention a trend or a tilt away from what is standard.
For example: "the measures announced by the Governor have an undeniable authoritarian bias", "his thought reveals a fascist bias that certainly acquired it during his military service", "the film has a homosexual bias that has made him popular within the gay community."
The notion of bias is very common in psychology. A cognitive bias is a characteristic of the subject which tends to think incorrectly, and that has an impact on the processing of the information. These biases are the cognitive judgment (the distortions that affect the way of perceiving reality).
The retrospective bias is bias which is to change, once the event, recollection about prior opinion in favour of the final result. False consensus bias, on the other hand, takes place when the person is convinced that his own opinions and beliefs (including its negative attributes) are supported or shared by most people.
In the field of statistics, the statistical bias is an error that is detected in the results of a study and that is due to factors such as the collection, analysis, interpretation or revision of data.
Then, the expression "through" is synonymous with "subject" or "by means of".