I've come across with the sentence below:
The appearance this gave of being able to conduct psychotherapy in a scientific manner,..., did much to ensure the popularity of Jung's associations research, particularly in America.
The general meaning of the sentence is clear. But I don't understand the meaning of "this gave of" In particular.
So, could you tell me please what the meaning of "gave of" is?
The fuller text is here:
This work established Jung's reputation as one of the rising stars of psychiatry. The conceptual basis of his early work lay in the work of Theodore Flournoy and Janet, which he attempted to fuse with the research methodology of Wilhelm Wundt and Emil Kraepelin. In such a manner, he was attempting to develop a clinico-experi-mental method, which he termed experimental psychopathology. The appearance this gave of being able to conduct psychotherapy in a scientific manner, through adopting some of the procedures of the experimental laboratory, did much to ensure the popularity of Jung's associations research, particularly in America.
From JUNG CONTRA FREUD The 1912 New York Lectures on the Theory of Psychoanalysis