Final answer:
Howard Gardner developed the Multiple Intelligences Theory, which recognizes the value of all types of intelligence and believes that none outweigh the others.
Step-by-step explanation:
In the field of psychology, one person who believed that all types of intelligence are valuable and that none outweigh each other is Howard Gardner. Gardner developed the Multiple Intelligences Theory, which suggests that individuals possess at least eight different intelligences, such as linguistic, logical-mathematical, musical, bodily kinesthetic, spatial, interpersonal, intrapersonal, and naturalistic intelligence. According to Gardner, each type of intelligence is significant and should be recognized and nurtured in education.