Sign Review

: It challenges the idea that sign languages are "just" gestures and explores how the visual nature of signing allows for more direct meaning than spoken sounds. The full text is available via Frontiers in Psychology .

: It suggests that early humans had a shared, intentional system of graphic communication long before formal writing systems like cuneiform existed. You can read the full study at PNAS . : It challenges the idea that sign languages

: This paper compares American Sign Language (ASL) and British Sign Language (BSL) with spoken English and Spanish. It investigates iconicity —how much a "sign" (word or gesture) physically resembles what it means (e.g., the sign for "drink" looking like drinking from a cup). You can read the full study at PNAS

Humans 40,000 y ago developed a system of conventional signs Humans 40,000 y ago developed a system of

3. Comparing Visual vs. Spoken Language (Psychology/Linguistics)