As with most things, there’s little correlation of high intelligence with morality, but there’s a large correlation of low intelligence with lack of morality.
Higher IQ individuals are more likely to be sociopaths than average IQ people. In a less scientific sense, they’re also less likely to do what they’re told which especially for whites in modern culture means they’re more likely to adopt more selfish and less altruistic beliefs on many issues.
That said, there are more sociopaths at low IQ levels than high IQ, and even among lower IQ neurotypicals, selfish or malicious behavior that would be considered immoral is far more prevalent than among those with average or higher IQs. It’s not necessarily that they’re incapable of determining right from wrong, but their rational minds are less engaged in their everyday behavior and they are less likely to consciously entertain moral concerns that may prevent them from making choices that could be considered immoral.
There are also individuals at a very low level of functioning (IQ<65-70 or so) whose minds are literally not fully capable of understanding morality, they’re a small enough minority to not be a huge issue in a place like the US but in many developing countries where 20-30% or more of the population is at that level due to malnutrition, it’s a serious problem.
I’ve been dancing around the fact that morality is subjective and IQ doesn’t really measure intelligence as there’s a real point to be made but keep in mind all these terms are fuzzily defined bullshit.
