Halliday divides the ideational into the logical and the experiential metafunctions. Developmental verbal dyspraxia (DVD) is a type of ideational dyspraxia, causing speech and language impairments. For this reason, he puts the experiential and logical functions together into the ideational function. The ideational function is further divided into the "experiential" and "logical". Induction, visualization, quantitative reasoning, and ideational fluency correlated .60 or more with "g". In these cases, Chinese mythological geography forms and informs these ideational processes. Small states have different goals and different bases, i.e. ideational, material and relational bases. He proposes three general functions&colon; the "ideational", the "interpersonal" and the "textual". In social theory, abstraction is used as both an ideational and material process. Someone rating low on need for closure will express more ideational fluidity and creative acts. The structure and symbolic/ideational aspects act as regulating mechanisms within the system as a whole. Adherents of the ideational definition have also drawn a distinction between left and right-wing populists. A common approach to defining populism is known as the ideational approach. Capacity building can increase a state's ideational capacities and amplify the effectiveness of persuasion-based strategies. The ideational metafunction is the function for construing human experience.