In the sentence
But the research suggests otherwise,
we know "suggest" is a transitive verb, so my question is, what "otherwise" is then? I guess it's an adverb here, but we must use suggest + noun/v-ing or that clause as an object right?
If "otherwise" here is used as an adverb, does that means "suggest" can be used as an intransitive verb? Or an adverb can be used as an object? I don't think so, thus I'm really confused.
If "otherwise" here is not used as an adverb here, then what is the component of "suggest" in the sentence?
The complete sentence is:
‘It might be what we find interesting about this story is that it’s got this survival-relevant information in it,’ says anthropologist Jamie Tehrani at Durham University in the UK. But his research suggests otherwise. ‘We have this huge gap in our knowledge about the history and prehistory of storytelling, despite the fact that we know this genre is an incredibly ancient one,’ he says.