Bias can be defined as a deviation from expectations of a value or the act of modifying an expected mean.
Painting bias is a natural act that is supposed to take place. I feel this is true because all painting is abstract or an act of summarization. A painter's artistic sensibility for his/her artwork is a filter of design, color, line and theme taken from one's own experience.
Bias comes from repeating favorite techniques from habit. A favorite technique can be done purposefully and consciously. Is that artistic bias? No.
The perceptions of each individual painter is different from any other painter. When a group of painters have the same subject matter, such as a particular landscape, each painting will be seen from a different artist perspective. It is based on the artist location, field of view and as seen through their own filter bias. Understanding this concept can lead to freer expression, imposing less negative self-judgement. Creative freedom is the goal.
Bias creates individuality, uniqueness and the artist own expression of beauty.
It is a cause for celebration. In this way painters create their own style, due to each having a different perspective of the landscape both physically, mentally and emotionally.
There are many shades of gray between abstract and representational art.
Peace and love. Russ Myers