ABSTRACT
The concept of complexity is used in many disciplines. Various aspects of this issue have been studied in mathematics, economics, biology, engineering, etc. For example, in economics, some scientists considered complexity from the standpoint of the transdisciplinary approach (Rosser, 2010a,b). According to this approach, the term complexity allows to study from a single position such disciplines as economics, physics, and biology. Assessment of the complexity of human labor is not considered by these scientists. However, evaluation of individual work, an assessment of its productivity, and adequate payment for more complex work are important aspects of economics. Complexity measurements can be utilized for assessment of ef- ciency of human performance and therefore is critically important not only for economics but also for ergonomics and work psychology. Here we study the psychological aspects of complexity. Increasing task complexity correlates with decreasing productivity, increasing errors and time performance of various tasks, and increasing cognitive efforts. However, before we start to consider the psychological aspects of complexity, it is necessary to examine some general aspects of this issue.
