Perceptual Blocks are obstacles that prevent the problem solver from clearly perceiving either the problem itself or the information needed to solve it. A few types of perceptual blocks are
Limiting the problem unnecessarily
Saturation or information overload
Emotional Blocks interfere with your ability to solve problems in many ways. They decrease the amount of freedom with which you explore and manipulate ideas, and they interfere with your ability to conceptualize fluently and flexibly.
Fear of risk taking
Lack of appetite for chaos
Judging rather than generating ideas
Lack of challenge
Inability to incubate
Cultural Blocks are acquired by exposure to a given set of cultural patterns, while environmental blocks are imposed by our immediate social and physical environment.
Environmental Blocks: Distractions (phones, interruptions) are blocks that inhibit deep prolonged concentration. Working in an atmosphere that is pleasant and supportive most often increases the productivity of the problem solver.
Intellectual Blocks: This block can occur as a result of inflexible or inadequate uses of problem-solving strategies. Lacking the necessary intellectual skills to solve a problem can certainly be a block as can lack of the information necessary to solve the problem.
Expressive Blocks: The inability to communicate your ideas to others, in either verbal or written form, can also block your progress.