A research question on pronunciation
I have been looking for the explanation and history of the English pronunciation convention of not pronouncing the P at the start of double consonant scientific words, in particular the P in Psychology.
It is my understanding that the letter Psi in the root word psyche is pronounced in both the original Greek and in the Latin transliteration, and further that it is pronounced in German, where the word psychology originated.
The intuitive explanation is that the P was dropped because PS is an unusual initial letter cluster in English, and that the history of this pronunciation convention can be traced to the English pronunciation of Latin words of Greek origin, religious words, such as Psalm, and finally that later scientific coinages built on Greek words beginning with PS, PT or PN followed the pronunciation convention for established for Ps.
And so, my questions are, 1) Is this understanding of the explanation and history correct, and if so is there a source in English documenting or even simply asserting this understanding?
2) Is this understanding in error, partially or completely, and was the English language pronunciation convention established in another manner? For example, was the pronunciation convention already established in Latin of its Greek loanwords and English merely copied the Latin? Or do the English pronunciation conventions of PS and PT (Psi and Pi) have different origins and did they establish themselves independently of each other?
Thank you ahead of time