Text 1
Biologist Masanori Kohda's 2019 study demonstrated that cleaner wrasse fish passed the mirror self-recognition (MSR) test. When marked with a colored gel on their throats, the fish scraped their bodies against substrate after viewing their reflections. Kohda argues that this mark-directed behavior indicates that self-awareness is not restricted to large-brained mammals but is shared by teleost fish.
Text 2
Cognitive scientist Sarah Beck cautions against overinterpreting mark-scraping behaviors in MSR tests. She points out that cleaner wrasse are highly sensitive to ectoparasites and frequently scrape themselves against rocks to dislodge them. The visual stimulus of a throat mark might simply trigger a hardwired motor response rather than reflecting a cognitive concept of self-identity. Thus, passing the test does not confirm self-consciousness in fish.
Based on the passages, how would Beck (Text 2) most likely respond to Kohda's interpretation of the fish's behavior (Text 1)?
- ABy agreeing that the fish's scraping behavior demonstrates a sophisticated cognitive understanding of their own reflections.
- BBy asserting that cleaner wrasse fish lack the sensory capacity to detect parasites on their bodies.
- By arguing that the mark-directed behavior may be an instinctual reaction to a visual stimulus rather than evidence of self-awareness.Answer
- DBy claiming that the fish would not have scraped their throats if the gel mark had been a color they could not perceive.