The cognitive theory is based on concepts of thinking, remembering, and decision making. It views these activities as behaviors that can be analyzed to understand their effects on learning. Key figures in cognitive theory include Paivio, Gagne, Gardner, and Bloom. Paivio's dual coding theory proposes that combining verbal and visual information enhances recall. Gagne identified different types and domains of learning. Gardner proposed multiple intelligences like linguistic, logical-mathematical, and interpersonal. Bloom defined cognitive, affective, and psychomotor domains, and his taxonomy has six levels of cognition from knowledge to evaluation.