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.
What is the average age for a toddler to start talking. Hi all, My Lo is 21 months and babbles gobbledegook. He never really says mamma or dadda but completely understands what we say to him. Please tell me this is normal and he'll start talking soon.hat is the average age for a toddler to start talking. Hi all, My Lo is 21 months and babbles gobbledegook. He never really says mamma or dadda but completely understands what we say to him. Please tell me this is normal and he'll start talking soon.