Which psychological specialists are most likely to be involved in applied research?

Industrial/Organizational psychologists

Applied research is a method used to solve a specific, practical problem of an individual, a group or a company. Companies hire industrial-organizational psychologists to develop technology that will help boost worker productivity and retention rates.

Psychological principles and research methods analyses both employee working styles to solve a problem.

earlier philosophers whose work influenced the enlightenment included bacon, descartes, locke, and spinoza. the major figures of the enlightenment included beccaria, diderot, hume, kant, montesquieu, rousseau, adam smith, and voltaire. it spread the ideas of the enlightenment across europe and beyond.

could you go a bit more in depth with you question? it's quite hard to understand. as soon as you do that i will be glad to : )