Sociolinguistics and Language Acquisition
Domain 2, Sociolinguistics and Language Acquisition, tests how social context shapes language and how learners acquire an additional language. Items may ask you to distinguish BICS from CALP, apply Krashen’s hypotheses, identify stages of second-language development, or interpret dialect and register variation without deficit framing.
Core concepts
- Sociolinguistics: dialect, idiolect, register, style shifting, code-switching, language attitudes, prestige, and language planning. AAVE has systematic grammar, including habitual be, copula absence, and multiple negation; it is a dialect, not a disorder.
- Acquisition theories: behaviorism (imitation, reinforcement); innatism (Chomsky’s universal grammar, language acquisition device, critical period); interactionism (input, negotiation of meaning, output). Krashen’s five hypotheses are acquisition/learning, monitor, natural order, input (i + 1), and affective filter.
- Cummins: BICS is conversational, context-embedded language, often acquired in 1–2 years; CALP is academic, context-reduced language, often taking 5–7 years. Common underlying proficiency supports transfer across languages.
- Interlanguage, fossilization, error analysis, and communicative competence (grammatical, sociolinguistic, discourse, and strategic).
- Social factors: acculturation, identity, investment, and anxiety influence participation and risk-taking.
- Common stage labels: preproduction, early production, speech emergence, intermediate fluency, and advanced fluency.
Worked example
A fifth grader chats easily at lunch but reads grade-level science text at frustration level. Reasoning: the profile fits BICS/CALP, not a global low-ability label. Conversation is context-embedded; science text is context-reduced and demands academic vocabulary and syntax. The plan should scaffold academic language-preview key terms, use diagrams, build sentence frames, and teach text structure-while continuing oral language support. A single oral fluency score should not be used to exit the student.
Traps
Do not treat an accent as evidence of low proficiency; pronunciation and comprehensibility are separate. Do not call code-switching confusion-it can be a strategic resource. Do not apply the critical period as an absolute deadline. Do not assume all errors come from L1 transfer; overgeneralization and developmental sequences matter. Avoid claiming that drills alone produce acquisition; meaningful input and interaction are central.