There are many stories about twins being able to "feel" each other even when they are apart. Typically a twin would say that they felt that an accident or some other calamity happened to the other one even though they were in different cities etc. Has this been researched?
No, twins do not have any special magical powers, despite a number of studies investigating the claim.
A lightweight study was done in 1993 to examine if identical twins tended to have similarities in thinking, independent of any Extrasensory Perception (ESP).
- Susan Blackmore and Frances Chamberlain, ESP and Thought Concordance in Twins: A Method of Comparison, Journal of the Society for Psychical Research. Vol 59, No 83.
The actual study that was performed is largely irrelevant here. What is interesting is the literature search in the Introduction:
Research on ESP in twins has been limited and sporadic.
It goes on to examine a fair number of studies that have been performed, and concludes:
Generally there seems to be little evidence of either a special ESP relationship between twins or a closer one between identical twins. Watson (1981) concludes that there is no evidence to support the idea of any parapsychological phenomena involved in the twin bond, and Palmer (1978), after reviewing the literature, concludes "There is no evidence that twins have any special aptitude for `telepathic' exchange