A quick Google Scholar search found these articles, which are very different in what they measure.
I was not able to read the full paper, but the abstract says quite a lot (emphasis added):
Superbrain Yoga is an exercise that involves squatting while holding the ear lobes with controlled breathing. Advocates claim that this exercise improves cognition and academic performance. This study tested the ability of Superbrain Yoga to improve performance on a cognitive task called the Number Facility Test. In the first experiment, 30 adults completed a baseline version of the Number Facility Test; performed standard squats, Superbrain Yoga, and a rest trial (counterbalanced); and were re-administered the Number Facility Test after each task. A nonparametric Quade test showed no significant difference in outcome measures (p = .99, Kendall’s W = .005). In the second experiment, 30 adults completed a baseline version of the Number Facility Test, performed standard squats and 2 alternative forms of Superbrain Yoga (counterbalanced), and were re-administered the Number Facility Test after each task. A Quade test indicated no significant difference in outcome measures (p = .19, Kendall’s W = .086). These results provide no support for the claims made for Superbrain Yoga. However, this research cannot exclude the possibility that alternative forms of Superbrain Yoga might be effective or that it might have an effect on cognitive skills not captured by the Number Facility Test.
Two studies of Superbrain Yoga’s potential effect on academic performance based on the Number Facility Test.
Helping children with various diagnoses
The book also claims that Superbrain Yoga exercise "show[s] dramatic improvements" in children with any one of several diagnoses, such as Autism. The study Superbrain Yoga in Children
with Autism and ADHD (unfortunately, it does not look peer reviewed) looked at four people:
MT is an autistic 6-year old twin boy
RT is a seven year-old boy with a diagnosis of attention deficit/ hyperactivity disorder and pervasive developmental disorder
JT is MT’s twin brother[...] He has been diagnosed with dyslexia and found to be emotionally disturbed
BC is a 7 year-old boy with the diagnosis of attention deficit disorder and traumatic brain injury. He was born with enlarged ventricles and missing a corpus collosum, the part of the brain connecting the left and right sides
The results were apparently good in all four boys:
With the use of regular Superbrain Yoga, the children are calmer and more focused. Overall improvement is shown in all areas including function and behavior; interacting with the environment with more success.
However there are several very major problems with this study that I can see right away:
- Possible bias. The author is apparently affiliated with "The Center for Pranic Healing", and "Prana" is some sort of Hindu thing that "includ[es] yoga, Indian medicine, and martial arts, [and] comprises all cosmic energy". This looks like conflict of interest to me, since
- Tiny sample size. Four is not enough to make any sort of solid statistical conclusion. In this case, it's not even four children with comparable diagnoses. And all four children were boys. It's not even clear to me how they picked them. (Convenience sample? I don't know.)
- Lack of control. Was it Superbrain Yoga or something else that caused the changes? Because there was no control group, I'm not convinced that Superbrain Yoga is the root of the change. Did the boys just mature a little with time? (Surely they're getting other types of therapy besides Superbrain Yoga?) Maybe regular deep breathing would show a similar effect?
Due to these problems, I believe the results found in this paper cannot be trusted.
I'll have to see if I can find all the studies referenced in the foreword of the book.
This must be Study 1, but I'm still trying to see how the numbers in the book match up with the number in the paper. Unfortunately, it doesn't look to be peer reviewed.
Study 5 might be this one. I'm not an EEG expert, so I'm not sure what to make of it. It does, however, give an important piece of information: "The super
brain yoga is well known in south India by the
name of Thoppukaranam and Ganeshasana in
the northern region of India as well" (emphasis in original). It's likely that there is more research done of the technique under these names.