In John B. Watson's attempt to condition a phobia in a child, what was the conditioned stimulus?

Phobic disorders treatment: Psych

What will be an ideal response?

At the age of 2, a child will typically have a vocabulary of ______ words and be able to say sentences ______ words in length

50–100; 2–3 5,000–10,000; 10–12 100–200; 5–20 100–2,000; 2–6