left-handed

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Related to sinistrality: right hander, Cack handed

left-handed

[′left ¦hand·əd]

(crystallography)

Having a crystal structure with a mirror-image relationship to a right-handed structure.

(design engineering)

left-laid

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References in periodicals archive ?

First records of sinistrality in the hogchoker, Trinectes maculatus (Bloch and Schneider) and partial albinism within a reversed American Heterostomate.

Inversion ocular en Paralichthys adspersus (Steindachner, 1867) lenguado de ojos chicos (Pleuronectiformes, paralichthyidae): un caso del ambiente y un analisis en ejemplares cultivados

Is forced dextrality an explanation for the fall in the prevalence of sinistrality with age?

Cognitive performance and left-handedness: comparative analyses in adults with seizures, physical, psychological and learning disorders in a rehabilitation setting

This survival advantage allows sinistrality to spread throughout previously dextral populations.

And a DNA-based family tree of the snail genus showed that sinistrality has arisen independently at least six times in Satsuma, more than would be expected were there not some driving force behind its evolution.

Some snails evolved 'counter-coil' to evade predators' uneven bite

This suggests that maternal, rather than paternal sinistrality, is associated with the elevated incidence of left-handed sons issuing from LL couples, the generally higher incidence of left-handed sons to LL couples possibly, therefore, being due to maternal sinistrality plus a minor base rate increment attributable to either dextral or sinistral fathers.

Essentially, the critical differences between prior and present results occur with respect to the influence of paternal sinistrality. In the present sample left-handed mothers produced the highest incidence of sinistral sons and left-handed fathers produced the lowest incidence of sinistral sons, the rate for the latter being no different than that for right-handed fathers.

A new family handedness sample with findings consistent with X-linked transmission

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.

Failure to support the right-shift theory's hypothesis of a `heterozygote advantage' for cognitive abilities

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.

Beyond sex differences in visuo-spatial processing: the impact of gender trait possession

It should also be noted that the presence of a balanced polymorphism for the rs system as a whole does not mean, as Annett (1985) puts it, 'that there must be advantages associated with sinistrality'.

Annett's theory that individuals heterozygous for the right shift gene are intellectually advantaged: theoretical and empirical problems

We must therefore conclude that there is no convincing evidence, despite a wealth of intriguing folkloric and etymological evidence, that modern-day Kerrs and Carrs have an increased likelihood of sinistrality.