This is different from declarative learing - intense effort generates mental stress. Conceptual learing is an inductive process - knowledge is formulated from examples. Conceptual learning is unconcious, automatic, and something like averaging. Though not stated explicitly in this article, these fragmented experiences can come from declarative, procedural, and other kinds of knowledge. Also not stated explicitly, our general concepts are influenced by cultural norms and personal biases.
Anological knowledge is knowledge of specifics.
This process of knowledge generation is strongly influenced by physiology - colours, tones, etc are processed by specific parts of the brain. We replay images and sounds in our minds and use the information in those specific images and sounds to help us think and do. Logical learning creates beliefs and meaning, something that was not mentioned in any of the previous forms of knowledge. Reasoning is a form of logical knowledge. An intuitive understanding of cause-effect is also a form of logical knowledge.