On the imperfections of experimental-psychological research

Mass experiment in the field of psychological research has already won the right to exist, and even the question of choosing a method is gradually losing its former urgency, despite the emergence of a number of new methods. True, there can be no talk of a single method, or at least the coordination and unification of the methods proposed and still practiced; it is even possible that there will be no need for this, due to local conditions, such as: the peculiarities of the task, the properties of human material, the fitness of the laboratory, and finally, due to personal preference for one particular technique; but one thing will remain constant and common for all conditions and research schools — the need to carry out experiments, firstly, by completely reliable personnel, and secondly, with the most correct and scientifically pure formulation of experiments.