Final answer:
The incorrect statement about human behavior is that there is no such person as an average person, as averages are often used in research and design. A researcher focusing on job fit would be a personality psychologist, employing methods like the Big-5 or Myers-Briggs assessments.
Step-by-step explanation:
The statement that is not true concerning human behavior is: A) There is not such person as an average person. While it is a recognized perspective that there is significant variability in human behavior and characteristics, the concept of an 'average person' is often used in research and design to address the most common attributes within a population.
In ergonomic design and human factors engineering, it is indeed a common practice to design systems that fit the median or certain percentiles of the population to accommodate as many users as possible. Regarding fitting personnel to a job, it is common to consider both physical and personality characteristics (C), and attitude is acknowledged as an important characteristic when matching a worker to a task (D).
A researcher interested in what factors make an employee best suited for a given job would likely identify as a personality psychologist. This field studies personality and its variation among individuals, which is essential when considering job fit.
The Big-5 and Myers-Briggs Type Indicator are well-known personality assessment tools that help in understanding employee characteristics. It is also true that human behavior is partially predictable when enough information about certain characteristics is known (e.g., through data plots of height and weight distributions).