My wife is a dog breeder. My anecdotal sample size is getting close to the sample size of the study. In one litter you will get such a large range of personali

My wife is a dog breeder. My anecdotal sample size is getting close to the sample size of the study. In one litter you will get such a large range of personalities even with same parents and being raised the same. And then there’s such a big range of behaviours between the breeds. For example, weimaraners are predisposed to separation anxiety. In addition, some owners adopt or rescue dogs who had bad experiences. With the article behind a paywall, I’m guessing a sample size of 70 is way too small to come up with something insightful. How on earth could they come up with a “negative spiral” from the data. Sounds made up. Anyway, I’ve stopped judging owners based on the behaviour of their dogs.