Experimental psychology. Experimental psychology refers to work done by those who apply experimental methods to psychological study and the processes that underlie it.
1 Baby talk at 18 months. 2  Babies at this age say up to 10 simple words and can point to people, objects, and body parts you name for them. 3  They repeat words or sounds they hear you say, like the last word in a sentence. Baby talk at 12 months. 2  Most babies say a few simple words like mama and dadda by the end of 12 months -- and now know what they're saying.
As your baby grows and develops speech and language skills, babbles will slowly turn into words and then into sentences. So when do babies start talking and saying their first words? Follow our talking timeline to learn about this important child development milestone.