An experimental group is the group in an experiment that receives the variable being tested. One variable is tested at a time. The experimental group is compared to a control group, which does not receive the test variable. In this way, experimental groups are used to find answers in an experiment.
1 At around 9 months of age, babies begin to pull themselves up to a standing position. 2  By 10 months of age, a baby should be able to grasp objects with thumb and forefinger.
My doctor said that a baby's eye color can change as late as 6 months old. She said if we get to 6 months and our little girl still has blue eyes then my genes won! (my husband's family has very strong dark brown eye genes, and brown is the dominant gene) gdb21186.