dex·tral

(dĕk′strəl)

adj.

1. Of, relating to, or located on the right side; right.

2. Right-handed.

3. Zoology Of or relating to a gastropod shell that coils clockwise and has its aperture to the right when facing the observer with the apex upward.

dex·tral′i·ty (dĕk-străl′ĭ-tē) n.

dex′tral·ly adv.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

dextrality

1. the condition of having the right side distinct or different from the left.
2. righthandedness.

dex·tral·i·ty

n. dextrismo, preferencia de uso de la mano derecha.

English-Spanish Medical Dictionary © Farlex 2012

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References in periodicals archive

This cluster is characterized by the highest range of all morphological characteristics: average test size (range 336.82-383.19 [micro]m; average 357.33 [micro]m), mean proloculus size (range 11.89-16.73 [micro]m; average 15.19 [micro]m), number of chambers (range 9.57-10.64; average 10.23), and dextrality (range 54.54-76.19%; average 70.31%).

The interdependency of the morphological variations of the planktonic foraminiferal species Globigerina bulloides in surface sediments on the environmental parameters of the southwestern Indian ocean

First record of dextrality in the California tonguefish Symphurus atricauda, with a second report of ambicoloration.

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

In most land snails, a single gene controls the switch between dextrality and sinistrality, meaning that reversals are likely to occur frequently.

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

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

Differences between the sexes for associations between handedness and cerebral anatomy (Amunts, Jaencke, Mohlberg, Steimetz, & Zilles, 2000; Witelson, 1989) may be due to greater dextrality in some mixed-handed females.

Hand preference observed in large healthy samples: classification, norms and interpretations of increased non-right-handedness by the right shift theory

Annett (1985) has suggested that the 'right shift' factor that promotes dextrality is more strongly expressed in females than in males, a feature that could account for the apparent fact seen in family handedness studies that left-handedness is slightly more common in males than in females.

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

Individuals with two copies (rs + + homozygotes) show a weak left hand performance and a strong tendency to dextrality due to a substantial impairment of the right hemisphere.

Testing the hypothesis of the relationships between laterality and ability according to Annett's right-shift theory: findings in an epidemiological sample of young adults

For example, those with the least bias to dextrality seem to show the greatest ability in arithmetical (Annett & Manning, 1990a) and in spatial (Annett, 1992 b) skills.

Predicting reading ability from handedness measures

Males 76+ 32 15.6 6.2 25.0 68.8 26-75 94 6.4 2.1 5.1 62.8 0-25 43 7.0 4.6 32.6 62.8 Total 169 8.3 3.6 32.5 63.9 Females 76+ 23 8.7 0.0 34.8 65.2 26-75 86 8.1 5.8 24.4 69.8 0-25 64 7.8 0.0 28.1 71.9 Total 173 8.1 2.9 27.2 69.9 Measures of hand skill for peg moving were used to examine the statistical significance of the trend to stronger dextrality in duller than brighter children.

The disadvantages of dextrality for intelligence - corrected findings

Annett (1972) proposed that chance is the main determinant of handedness in all humans (and other primates) but that the chances are biased towards dextrality in most humans as a by-product of something which gives a left hemisphere advantage for speech.

Rejoinder to 'Annett's theory' by McManus, Shergill & Bryden (1993)