the Wisconsin Twin Project's research on challenges
and adaptation, families with children between the ages
of two and three are interviewed for the toddler assessment.
All families with twins born in Wisconsin are invited
to participate in this portion of the study.
The purpose of the toddler study is to
learn more about early twin similarities and differences
in personality and behavior in a variety of everyday
situations. Parents are asked to complete a phone interview,
mailed questionnaires, and a vocabulary checklist for
each twin. Parents should refer to the letter of informed
consent for complete details concerning research participation.
A brief summary of participation is provided below.
First, the twins' primary caregiver
is interviewed by telephone. The interview includes
questions about the twins' physical similarities,
behavior and emotional reactions, and language, with
questions like, "Shows pleasure when s/he succeeds
(for example, claps for self)" and "Does
Twin A have a regular name for Mom?" We also
ask about basic family information, such as how many
siblings the twins have and parents' occupation.
In addition to the telephone interview,
parents are asked to complete a packet that includes
a vocabulary checklist about each twin and questionnaire
about child temperament. One or both parents can fill
out their own questionnaire, answering questions like
"When Twin A saw an insect up close, how often
did s/he run away?"