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.
Learning to talk is a slow process, and it can take a long time to establish a large enough vocabulary for meaningful conversations. Most children say their first words between 11 and 14 months of age. Popular first words include âmama' and âdada', but could be any word she has heard often enough. By 16 months, girls can say an average of 50 words, and boys have a vocabulary of around 30. At this stage in their language development, it is common for boys to be two months behind their female peers. By her second birthday, your birthday will know up to 200 words â although may not use all of these.