In this study, researchers genetically engineered mice to produce extra cadherin, which they predicted would mean more stable synapses, stronger memories, and more tendency towards addiction.
But the mice with extra cadherin spent the time in both rooms. And the researchers took this to mean the genetically-engineered mice weren’t forming strong memories related to addiction.
Our synapses need to get stronger and weaker, or reform completely for our memories to work properly, so flooding a human brain with extra cadherins isn’t something we would want to do.