Examlex
The proton NMR spectrum of an unknown compound contains a triplet at 9.8 ppm. Which of the following could be this unknown?
Concrete Operational
A stage of cognitive development in children, as proposed by Piaget, where they are able to think logically about concrete events.
Autism Spectrum Disorder
A disorder affecting development that manifests as challenges in communicating and interacting socially, along with limited and repetitive ways of thinking and behaving.
Stranger Anxiety
A developmental phenomenon typically occurring around 8 to 12 months of age, where infants show distress or unease in the presence of unfamiliar people.
Infantile Amnesia
The common inability of adults to recall memories from early childhood, typically before the age of 3 or 4.
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