High laterality means you tend to have multiple trains of thought at any time, consider a wide range of possibilities, connect seemingly unrelated things together by creating tangents, and tend to communicate in a referential, roundabout manner. In contrast, being linear means you tend to approach life in a straightforward way, tend to focus on a single task much of the time, prefer seeing and accepting things as they are, and communicate in a highly linear and sequential manner.
Being impressionistic means you tend to more readily accept ideas and concepts without a robust terminology, prioritize the rawest impressions during thinking, and most likely have trouble expressing your ideas in words or in a categorical, rule-bound manner. On the other side, high lexicality means you understand things better when they are able to be formulated or codified, refuse understandings without a solid terminology, favor organization and categorization of thought, and most likely have an easier time expressing things in words.