This value you provided is not a number. Please try again.

This value you provided is not an integer. Please try again.

The value entered is not a valid Vanderbilt Medical Record Number (i.e. 4- to 9-digit number, excluding leading zeros). Please try again.

The value you provided must be within the suggested range.

The value you provided is outside the suggested range.

This value is admissible, but you may wish to double check it.

The value entered must be a time value in the following format HH:MM within the range 00:00-23:59 (e.g., 04:32 or 23:19).

This field must be a 5 or 9 digit U.S. ZIP Code (like 94043). Please re-enter it now.

This field must be a 10 digit U.S. phone number (like 415 555 1212). Please re-enter it now.

This field must be a valid email address (like joe@user.com). Please re-enter it now.

The value you provided could not be validated because it does not follow the expected format. Please try again.

Required format:

/^((0?[1-9])|([1-8][0-9])|(9[0-8]))[0-9]{3}$/

/^((29([-\/])02\3(\d{2}([13579][26]|[2468][048]|04|08)|(1600|2[048]00)))|((((0[1-9]|1\d|2[0-8])([-\/])(0[1-9]|1[012]))|((29|30)([-\/])(0[13-9]|1[012]))|(31([-\/])(0[13578]|1[02])))(\11|\15|\18)\d{4}))$/

/^((02([-\/])29\3(\d{2}([13579][26]|[2468][048]|04|08)|(1600|2[048]00)))|((((0[1-9]|1[012])([-\/])(0[1-9]|1\d|2[0-8]))|((0[13-9]|1[012])([-\/])(29|30))|((0[13578]|1[02])([-\/])31))(\11|\15|\19)\d{4}))$/

/^(((\d{2}([13579][26]|[2468][048]|04|08)|(1600|2[048]00))([-\/])02(\6)29)|(\d{4}([-\/])((0[1-9]|1[012])(\9)(0[1-9]|1\d|2[0-8])|((0[13-9]|1[012])(\9)(29|30))|((0[13578]|1[02])(\9)31))))$/

/^(((\d{2}([13579][26]|[2468][048]|04|08)|(1600|2[048]00))([-\/])02(\6)29)|(\d{4}([-\/])((0[1-9]|1[012])(\9)(0[1-9]|1\d|2[0-8])|((0[13-9]|1[012])(\9)(29|30))|((0[13578]|1[02])(\9)31)))) (\d|[0-1]\d|[2][0-3]):[0-5]\d$/

/^(?!\.)((?!.*\.{2})[a-zA-Z0-9\u0080-\u02AF\u0300-\u07FF\u0900-\u18AF\u1900-\u1A1F\u1B00-\u1B7F\u1D00-\u1FFF\u20D0-\u214F\u2C00-\u2DDF\u2F00-\u2FDF\u2FF0-\u2FFF\u3040-\u319F\u31C0-\uA4CF\uA700-\uA71F\uA800-\uA82F\uA840-\uA87F\uAC00-\uD7AF\uF900-\uFAFF!#$%&'*+\-/=?^_`{|}~\d]+)(\.[a-zA-Z0-9\u0080-\u02AF\u0300-\u07FF\u0900-\u18AF\u1900-\u1A1F\u1B00-\u1B7F\u1D00-\u1FFF\u20D0-\u214F\u2C00-\u2DDF\u2F00-\u2FDF\u2FF0-\u2FFF\u3040-\u319F\u31C0-\uA4CF\uA700-\uA71F\uA800-\uA82F\uA840-\uA87F\uAC00-\uD7AF\uF900-\uFAFF!#$%&'*+\-/=?^_`{|}~\d]+)*@(?!\.)([a-zA-Z0-9\u0080-\u02AF\u0300-\u07FF\u0900-\u18AF\u1900-\u1A1F\u1B00-\u1B7F\u1D00-\u1FFF\u20D0-\u214F\u2C00-\u2DDF\u2F00-\u2FDF\u2FF0-\u2FFF\u3040-\u319F\u31C0-\uA4CF\uA700-\uA71F\uA800-\uA82F\uA840-\uA87F\uAC00-\uD7AF\uF900-\uFAFF\-\.\d]+)((\.([a-zA-Z\u0080-\u02AF\u0300-\u07FF\u0900-\u18AF\u1900-\u1A1F\u1B00-\u1B7F\u1D00-\u1FFF\u20D0-\u214F\u2C00-\u2DDF\u2F00-\u2FDF\u2FF0-\u2FFF\u3040-\u319F\u31C0-\uA4CF\uA700-\uA71F\uA800-\uA82F\uA840-\uA87F\uAC00-\uD7AF\uF900-\uFAFF]){2,63})+)$/i

/^[-+]?\b\d+\b$/

/^[a-z]+$/i

/^\d{10}$/

/^[a-z0-9-_]+$/i

/^[-+]?[0-9]*\.?[0-9]+([eE][-+]?[0-9]+)?$/

/^-?\d+,\d$/

/^-?\d+\.\d$/

/^-?\d+,\d{2}$/

/^-?\d+\.\d{2}$/

/^-?\d+,\d{3}$/

/^-?\d+\.\d{3}$/

/^-?\d+,\d{4}$/

/^-?\d+\.\d{4}$/

/^[-+]?[0-9]*,?[0-9]+([eE][-+]?[0-9]+)?$/

/^($0[2-8]$|0[2-8])\s*\d{4}\s*\d{4}$/

/^(?:$?([2-9]0[1-9]|[2-9]1[02-9]|[2-9][2-9][0-9]|800|811)$?)\s*(?:[.-]\s*)?([2-9]1[02-9]|[2-9][02-9]1|[2-9][02-9]{2})\s*(?:[.-]\s*)?([0-9]{4})(?:\s*(?:#|x\.?|ext\.?|extension)\s*(\d+))?$/

/^\d{4}$/

/^[ABCEGHJKLMNPRSTVXY]{1}\d{1}[A-Z]{1}\s*\d{1}[A-Z]{1}\d{1}$/i

/^(0[1-9]|[1-9]\d)\d{3}$/

/^\d{3}-\d\d-\d{4}$/

/^([0-9]|[0-1][0-9]|[2][0-3]):([0-5][0-9])$/

/^[0-5]\d:[0-5]\d$/

/^\d-\d{4}$/

/^[0-9]{4,9}$/

/^\d{5}(-\d{4})?$/

mjZEQH9Zaop7JwYPo8TiPcPkYrE6BYRWrZQzUiHW9N7N

Twin Brains Registration

Returning?

A A A

Registration for the Twin Brains Study

If your twins/multiples are currently in grades 3-8 (or will be next fall), your family may be eligible to participate in the Twin Brains Study at the University of Texas. Our research team is interested in how life events and circumstances contribute to children's brain development and academic success. Your family can earn up to $200 by participating in our study ($100 per twin/multiple).

If your family agrees to participate, you will be asked to complete a survey and bring the twins/multiples to our lab at UT for up to two visits. During the first visit, your children will fill out a survey and take tests that measure a variety of abilities. We will also collect a small hair sample (about the width of a matchstick) to test the levels of certain hormones. If your children are eligible for the second visit, they will watch a movie and play games while our team takes pictures of their brains.

Our lab uses Magnetic Resonance Imaging (MRI) to take pictures of the brain. MRI does not use x-rays or radiation; it uses a magnetic field and radio waves to build images. The risk of having an MRI is not greater than risks children experience in everyday life. Each child will receive a picture of their brain if they participate in the MRI visit.

If you are interested in participating in either Visit 1 (survey and cognitive tests) or Visit 2 (MRI scan and games), please fill out the information below. After you sign up, we will contact you to answer any questions you might have about participating and to schedule an appointment to visit the lab. Please let us know if you have any questions prior to enrolling by emailing the lab at twinbrainsUT@gmail.com or calling 512-471-1406.

Y-M-D

Identical

Fraternal

I don't know

reset

White

Hispanic/Latino

Black/African-American

Asian

Other

Male

Female

reset

Yes

reset

Yes

reset

Male

Female

reset

Yes

reset

Yes

reset

I received a letter or phone call.

I heard about the study from a friend.

I found the website when browsing the Internet.

I saw the Twin Project commercial.

Other

reset

Visit 1: Child survey and cognitive tests

Visit 2: MRI scan and games

Twin 1

Twin 2

Neither twin

Expand

Twin 1

Twin 2

Neither twin

Twin 1

Twin 2

Neither twin

Twin 1

Twin 2

Neither twin

Expand

Twin 1

Twin 2

Neither twin

Twin 1

Twin 2

Neither twin

Twin 1

Twin 2

Neither twin

Twin 1

Twin 2

Neither twin

Twin 1

Twin 2

Neither twin

Twin 1

Twin 2

Neither twin

Twin 1

Twin 2

Neither twin

Twin 1

Twin 2

Neither twin

Twin 1

Twin 2

Neither twin

Twin 1

Twin 2

Neither twin

Twin 1

Twin 2

Neither twin

Twin 1

Twin 2

Neither twin

Twin 1

Twin 2

Neither twin

Twin 1

Twin 2

Neither twin

Twin 1

Twin 2

Neither twin

Expand

You have selected an option that triggers this survey to end right now.

To save your responses and end the survey, click the 'End Survey' button below. If you have selected the wrong option by accident and/or wish to return to the survey, click the 'Return and Edit Response' button.