The utilization of visual feedback information during rapid pointing movements

Three experiments were conducted to determine how variables other than movement time influence the speed of visual feedback utilization in a target-pointing task. In Experiment 1, subjects moved a stylus to a target 20 cm away with movement times of approximately 225 msec. Visual feedback was manipulated by leaving the room lights on over the whole course of the movement or extinguishing the lights upon movement initiation, while prior knowledge about feedback availability was manipulated by blocking or randomizing feedback. Subjects exhibited less radial error in the lights-on/blocked condition than in the other three conditions. In Experiment 2, when subjects were forced to use vision by a laterally displacing prism, it was found that they benefited from the presence of visual feedback regardless of feedback uncertainty even when moving very rapidly (e.g. less than 190 msec). In Experiment 3, subjects pointed with and without a prism over a wide variety of movement times. Subjects benefited from vision much earlier in the prism condition. Subjects seem able to use vision rapidly to modify aiming movements but may do so only when the visual information is predictably available and/or yields an error large enough to detect early enough to correct.     

A nuanced look into youth journeys of gender transition and detransition

Some media have suggested that many youths who have previously completed a gender transition are “detransitioning”. Their experience is often framed around the idea of regrets but rare are the articles that provide a nuanced examination of their journey. This article presents the perspectives of youths who have detransitioned or discontinued a transition regarding their experiences and feelings on their journey from transition to detransition. Semi-structured interviews were conducted with 20 youths between the age of 16 and 25 years who were recruited on social media and who transitioned and detransitioned or discontinued their transition. Data were analysed according to thematic analysis. Regrets and feelings of satisfaction can both coexist. The processes of transition and discontinuation or detransition appear to be non-linear and participants do not necessarily return to a cisgender identity. Ambiguous loss theory is applied to frame youth experiences and feelings and to suggest way forward for intervention.

Highlights

• This paper examines the experiences and feelings of youth on their journey from transition to detransition.
• Their journey is experienced as non-linear, and often comprised mixed feelings and experiences about transition and detransition steps.
• Ambiguous loss theory allows a nuanced understanding of feelings and experiences of their journey from transition to detransition.