The grey tones of Tchekoff have, in Andreyev, become black; his rather sad humor has been transformed into tragic irony; his subtle Impressionability into morbid sensibility.
"Contemporary Russian Novelists"
Serge Persky
In this grave face, with its sensuous mouth and melancholy speculative eyes, he recognised the mingled strain of Impressionability and unrest that had reached such diverse issues in his cousin and himself.
"The Valley of Decision"
Edith Wharton
In contrast to the genuine catatonia, Raecke's stupor as well as Ganser's twilight state, are characterized by a high grade of Impressionability to things in the environment, which may at any time suddenly cause a complete transition from an apparently deep stupor to normal manner and behavior.
"Studies in Forensic Psychiatry"
Bernard Glueck