The phrase "a study of twins" is correct and usable in written English.
You can use it when referring to research or analysis that focuses on twins, often in the context of psychology, genetics, or social studies.
Example: "The researchers conducted a study of twins to explore the impact of genetics on personality traits."
Alternatives: "an analysis of twins" or "a research project on twins".
To test the idea, they conducted a study of twins.
Perhaps the strongest evidence supporting this genetic basis for gratitude comes from a study of twins.
In 2000, a study of twins in Finland also showed a shared risk for depression and allergies, a result of genetic influences, the authors wrote.
Tambs, K., Sundet, J. M., Magnus, P. & Berg, K. Genetic and environmental contributions to the covariance between occupational status, educational attainment, and IQ: a study of twins.
The dissidents marshaled medical journal articles, including a study of twins showing that a significant part of the variance in metabolizing calories was because of genetics.
A study of twins, for instance, has shown that a conservative or progressive orientation can be inherited, while a decades-long study has found that personality traits associated with liberalism or conservatism later in life show up in preschoolers.
A study of twin gestations supports our reasoning.
The present sample consists of adolescent twins who participated in wave 2 of the G1219 study—a longitudinal study of twins and their families.
A study of monozygotic twins discovered that the microbiota is significantly more similar between twins than between unrelated individuals [ 60, 61].
Arden, N. K., Baker, J., Hogg, C., Baan, K. & Spector, T. D. The heritability of bone mineral density, ultrasound of the calcaneus and hip axis length: a study of postmenopausal twins.
The evidence for this set point, and the phrase itself, came from a study of identical twins by the behavioral geneticist David Lykken, which concluded that "trying to be happier is like trying to be taller".
