First records of sinistrality
in Microstomus pacificus (Lockington) and Glyptocephalus zachirus Lockington, Pleuronectid fishes of western North America, with meristic data.
The sound of one hand clapping: meditations on sinistrality
This survival advantage allows sinistrality
to spread throughout previously dextral populations.
The first Left Handers Day was held in 1992, planned as an annual event when left-handers everywhere could celebrate their sinistrality
and increase public awareness of the advantages and disadvantages of being left-handed.
Pathological left-handedness and familial sinistrality
in relation to degree of mental retardation.
Gilbert and Wysocki (1992) showed a decrease with age in sinistrality
and mixed-handedness with a two-item (writing, throwing) questionnaire that was returned by more than 1 million U.
The occasion is a day "when left-handers everywhere can celebrate their sinistrality
and increase public awareness of the advantages and disadvantages of being left-handed," The Left-Handers Club said on the website.
For female offspring, all four studies found a higher incidence of sinistrality
for LR than for RR couples, but only two of the four found a significantly higher rate of sinistrality
for RL couples than for RR couples.
Whereas Levy suggested that dextrality was favourable for spatial abilities and sinistrality
favourable for verbal abilities, Annett's theory suggests (Annett, 1995, [ILLUSTRATION FOR FIGURE 3 OMITTED], p.
One should also note that Casey, Colon & Goris (1992) have suggested that right-handed females with familial sinistrality
are most likely to benefit from such training.
Since rs-/- individuals are more likely to be left-handed than are rs+/+ individuals, the net result is a lower degree of fitness associated with sinistrality