What personality traits can be exploited to promote increased tangential learning?

Learning is acquiring new, or modifying existing, knowledge, behaviors, skills, values, or preferences and may involve synthesizing different types of information. Human learning may occur as part of education, personal development, schooling, or training. It may be goal-oriented and may be aided by motivation. Rote learning is a technique which avoids understanding the inner complexities and inferences of the subject that is being learned and instead focuses on memorizing the material so that it can be recalled by the learner exactly the way it was read or heard. The major practice involved in rote learning techniques is learning by repetition, based on the idea that one will be able to quickly recall the material (but not necessarily its meaning) the more it is repeated. Rote learning is used in diverse areas, from mathematics to music to religion. Although it has been criticized by some schools of thought, rote learning is a necessity in many situations. Meaningful learning is the concept that learned knowledge is fully understood to the extent that it relates to other knowledge. To this end, meaningful contrasts with rote learning in which information is acquired without regard to understanding. Meaningful learning, on the other hand, implies there is a comprehensive knowledge of the context of the facts learned. Tangential learning is the process by which people will self-educate if a topic is exposed to them in a context that they already enjoy. (Wiki Learning)

What personality traits can be exploited to promote increased tangential learning? How? One example is Scouting, where things are learned apart from normal academics and the method is through experience. It must be fun for the program to survive