Organ transplants still unacceptable in 1975 .
"A peculiar factor sometimes noted is a so-called 'personality transplant.' That is, the recipient in some cases has seemed to adopt certain personality factors of the person from whom the organ came." Watchtower 1975 September 1/ 519
1970 idea that the human heart somehow could "think" for a person like the brain. Possibly this above idea was aimed at heart transplants?
[circa 1970]. summer assembly there was huge models of the human heart and brain that were "talking" to each other on stage.
The heart supposedly was the seat of emotions, the brain of intellect.
they tried to make the case that all the scriptures talking about the "heart" were not figurative, but referred to one's literal heart--the organ itself!
Heart - Site of Emotions
In 1971, whilst organ transplants were banned, the Watchtower published an article about the heart. In the article, quoted below, they believed that the heart was were all a persons emotions came from. This was not in a figurative way but very literally. In the below text the Watchtower talks about how heart transplant patients have become psychotic, and even possibly suggesting that they acquired the heart’s previous owner personalities.
Watchtower 1971 March 1 pp.133-9 How Is Your Heart?
"There is a close interrelationship between the heart and the mind, but they are two different faculties, centering in different locations. The heart is a marvelously designed muscular pump, but, more significantly, our emotional and motivating capacities are built within it. Love, hate, desire (good and bad), preference for one thing over another, ambition, fear—in effect, all that serves to motivate us in relationship to our affections and desires springs from the heart."