Related Experiment Video
Updated: Feb 22, 2026

Using Cholesky Decomposition to Explore Individual Differences in Longitudinal Relations between Reading Skills
Published on: September 17, 2019
Twins and socioeconomic factors: changes in the last 20 years
Ariadne Malamitsi-Puchner1, Konstantinos Voulgaris2, Emmanouela Sdona1
1a Medical School, National and Kapodistrian University of Athens , Athens , Greece.
Background:
Socioeconomic factors associated with twins/multiples have been sparsely studied.
Methods:
Data, regarding twin out of total births from 1996 to 2015, were extracted from databases of the Hellenic Statistical Authority and analyzed.
Results:
Twinning rate in Greece has increased from 1996 and onwards, in parallel with advanced maternal age and decline in total births. Higher twin rates are associated with higher maternal education, better paid parental occupations, and thus wealthier families, married maternal status, while immigrants present a lower twinning rate than Greeks. Lastly, the years of the economic crisis, starting in the year 2008 and still continuing, are characterized by a higher percentage of twins.
Conclusions:
Our findings should be mainly attributed to the postponement of fertility, as well as the treatment of infertility with transfer of multiple embryos, when assisted reproductive technologies are applied.
More Related Videos
09:16Use of a Video Scoring Anchor for Rapid Serial Assessment of Social Communication in Toddlers
Published on: March 14, 2018
09:51Model Surgical Training: Skills Acquisition in Fetoscopic Laser Photocoagulation of Monochorionic Diamniotic Twin Placenta Using Realistic Simulators
Published on: March 21, 2018
Related Concept Videos
Behavioral Genetics and Its Designs
The primary methodologies used in behavior genetics include family studies, twin studies, and adoption studies, each providing unique...
Close Relationships and Culture
Regression Toward the Mean
Environmental Influences on Intelligence
Socioemotional Experience and Gender Development
Impact of Social Context on Individuals