Here is the abstract of Tory's work:

Nominalizing reduplication has been proposed to be a morphophonological process wherein a verb’s movement is reduplicated to procure a nominal meaning (Supalla & Newport 1978, Abner 2013). However, this process is largely unpredictable, and the construal of a morphological process leads researchers to analyze nominal signs through the lens of their verbal counterparts, which excludes repeated-movement nominals without a clear verbal pair like FATHER and APPLE. It remains unclear how and why repetition of movement arises in certain nominal signs, and not others; this suggests that there are other effects at work. Operating on the previously unstated assumption that a majority of nominal signs stem from verbs in sign languages, I inquire into the broad demarcations for the categorization of nominal signs and propose some possible processes that led to the current landscape of nominal forms in American Sign Language (ASL). I find that, while there are some universal features in nominal signs such as having more distal and restrained movement, there is some variability in nominal signs along two dimensions: synchronic retrievability of their verbal counterpart and repetition of movement. Drawing upon data from emerging sign languages like early ASL in the 1910’s and Nicaraguan Sign Language (LSN), I also find several mechanisms that may have led to the collective construal regarding repetition of movement in nominal signs: the phonological reduction of aspect, the degree of human interaction, and the conceptual vacuum of two-movement forms.