The researchers categorized passages as Neutral, Mildly Distressing, and Markedly Distressing. The example given of the latter is in fact from Crime and Punishment, by Fyodor Dostoevsky
He had not a minute more to lose. He pulled the axe quite out, swung it with both arms, scarcely conscious of himself, and almost without effort, almost mechanically, brought the blunt side down on her head. He seemed not to use his own strength in this. But as soon as he had once brought the axe down, his strength returned to him.
The old woman was as always bareheaded. Her thin, light hair, streaked with grey, thickly smeared with grease, was plaited in a rat’s tail and fastened by a broken horn comb which stood out on the nape of her neck. As she was so short, the blow fell on the very top of her skull. She cried out, but very faintly, and suddenly sank all of a heap on the floor, raising her hands to her head… Then he dealt her another blow with the blunt side and on the same spot. The blood gushed as if from an upturned glass, the body fell back. He stepped back, let it fall, and at once bent over her face; she was dead. Her eyes seemed to be starting out of their sockets, the brow and the whole face were drawn and contorted convulsively.
Passages from “The Possessed” would cause “feelings” to go off the charts. Even “The Idiot” is hard to take.