A plethora of research exists regarding both weighted blankets, but also the underlying technique called "Deep Pressure Touch Stimulation" (DPTS). Here, we have highlighted some of the studies that conclude the positive effect of the use of weighted blankets on people.
The Swedish sleep researcher, Gaby Badre, studied the use of weighted blankets with the aim of reducing insomnia. In this study, it was generally concluded that a weighted blanket had a positive effect on the participants' sleep. The participants especially found it to be easier to calm down, and the study indicates that everyone experienced sleep with less movement and increased relaxation. (Source)
A master's thesis from Denmark found evidence of the effect of ball cushions in children with sensory-integrated problems. Here, the study concludes that a ball cushion could contribute to a better night's sleep, mood, and concentration. (Source)
In 2010, a study was published regarding the use of ball mattresses to treat sleep problems. The study concludes that the use of ball cushions is particularly relevant and effective especially regarding falling asleep faster. In children with ADHD, the study concludes that 20 % of the participants, who previously needed more than 30 minutes to fall asleep, were reduced to 0 %. In other words, all children with ADHD fell asleep in less than 30 minutes, just by using a ball cushion. (Source)
A study from 2008 investigated the therapeutic effect of deep tactile pressure stimulation using a weighted blanket. Here, the study found that 33 % had less EDA, 63 % experienced less anxiety, and 78 % preferred the weighted pillow as a means of calming down based on the 32 participants. (Source)