When Kai sees a dog running towards his younger sister, his eyes widen and his mouth opens in a fearful expression before he says anything. His sister immediately turns round to look.
Explain how Darwin's (1872) theory of evolution would account for Kai's facial expression.
48 exam-style questions on Edexcel GCSE Psychology 10.1 Language, thought and communication, covering 10.1.1 Relationship between language and thought, 10.1.2 How thought and language affect views of the world, 10.1.3 Human vs animal communication, 10.1.4 Non-verbal communication examples, and 10.1.5 Explanations of non-verbal communication. Each one has a worked solution and a mark scheme showing where the marks go.