Estonia

• Tallinn (the Estonian capital, mixed ethnicity/nationality)
  Two groups of Russians, one all male and one all female, with at least some higher education;
  Two groups of Estonians, one all male and one all female, with at least some higher education;

• Narva (a provincial city in eastern Estonia; primarily ethnic Russians)
  Two groups of Russians, one all male and one all female, with no more than secondary education;

• Tartu (a provincial city in southern Estonia, primarily ethnic Estonian)
  Two groups of Estonians, one all male and one all female, with no more than secondary education;

• Tamsalu (a rural village in southern Estonia, primarily ethnic Estonian)
  Two groups of Estonians, one all male and one all female, with no more than secondary education.

• Sillamae (a Baltic coast city, primarily Russian)
  Two groups of Russians, one all male, and one all female, with no more than secondary education.
  

Ukraine

• Kiev (the Ukrainian capital, mixed ethnicity/nationality)
  Two groups of Russians, one all male and one all female, with at least some higher education;
  Two groups of Ukrainians, one all male and one all female, with at least some higher education;

• Donetsk (a provincial city in southeastern Ukraine, primarily ethnic Russian)
  Two groups of Russians, one all male and one all female, with no more than secondary education;

• Lviv (a provincial city in western Ukraine, primarily ethnic Ukrainian)
  Two groups of Ukrainians, one all male and one all female, with no more than secondary education;

• Olexandrivka (a rural village in southwestern Ukraine, primarily ethnic Ukrainian)
  Two groups, one all male and one all female, with no more than secondary education.

• Ivankiv (a city just outside the Chernobyl zone), mixed nationalities

Uzbekistan

• Tashkent (the Uzbek capital, mixed ethnicity/nationality)
  Two groups of Uzbeks, one all male and one all female, with at least some higher education;
  Two groups of Europeans (primarily Russians), one all male and one all female, with at least some higher education;

• Bukhara (a provincial city in western Uzbekistan, mixed ethnicity/nationality)
  Two groups of rural Uzbeks, one all male and one all female, with no more than secondary education;
  Two groups of urban Tajiks, one all male and one all female, with no more than secondary education;

• Ferghana (a provincial city in eastern Uzbekistan)
  Two groups, one all male and one all female, with no more than secondary education.

• Moynak (a provincial city formerly on the Aral Sea, mostly Karakalpak)
  Two groups, one all male and one all female, with no more than secondary education.