Which neurocognitive domain encompasses both syntax and grammar?

The domain that encompasses both syntax and grammar is Language. This domain specifically refers to the cognitive processes involved in understanding and producing language, including all aspects such as phonology, semantics, and importantly, syntax and grammar.

Syntax involves the rules that govern the structure of sentences, while grammar encompasses the broader rules that guide the formation of phrases and sentences in a coherent manner. When assessing neurocognitive functions, Language as a domain addresses the ability to use and understand these complex systems effectively.

The other domains mentioned do not directly deal with the structural aspects of language. For instance, Social Cognition pertains to understanding social interactions and the emotions and intentions of others, Learning and Memory focuses on the processes of acquiring and recalling information, and Executive Functioning involves higher-level cognitive skills such as planning, decision-making, and problem-solving. Therefore, these domains do not encompass the specific linguistic elements of syntax and grammar found within the Language domain.