Final answer:
Psychedelic rock is characterized by complex instrumental arrangements, which include a variety of instruments, long solos, and experimental sound effects, and it generally defies traditional musical structures.
Step-by-step explanation:
The characteristic often associated with psychedelic rock music is complex instrumental arrangements. Psychedelic rock is known for its experimental approach to sound and music composition, frequently incorporating a variety of instruments and sound effects to create an immersive and trance-like experience.
This genre tends to defy traditional musical structures and instead embraces long instrumental solos, non-standard chord progressions, and the use of studio effects to create new sonic textures. In contrast, minimalistic lyrics, strict adherence to traditional musical structures, and the absence of experimental sound effects are not characteristics commonly associated with psychedelic rock.