He investigated 12 children, which seemingly had normal developmental progress, but due to environmental triggers, they regressed developmentally and acquired associated intestinal abnormalities (1). The environmental trigger in question which sparked the problems was the MMR (measles, mumps, and rubella) vaccine. The 12 children all had a diagnosis under ASD, but for 8 of the children the sudden onset of symptoms related to that of ASD was linked to the administration of the MMR vaccine, based on the parents’ testament (1). Wakefield doesn’t directly state that vaccines caused the development of ASD symptoms in the children, but strongly suggests there is a correlation between the two events. He does so by stacking evidence which supports the correlation such as that of the parents’ opinions that their child’s behavior shifted within 2 weeks of the administration of the vaccine, mentioning other studies which also observed an association between the MMR vaccine and onset of behavioral symptoms, and conducting brain tests, especially for fragile x syndrome which came out negative, and deemed the child did not have genetic predispositions towards developing ASD (1). However, the parents’ evidence of behavioral changes post-vaccinations can be seen as a Hindsight bias, as they are recollecting the past events. It is also a possibility that
He investigated 12 children, which seemingly had normal developmental progress, but due to environmental triggers, they regressed developmentally and acquired associated intestinal abnormalities (1). The environmental trigger in question which sparked the problems was the MMR (measles, mumps, and rubella) vaccine. The 12 children all had a diagnosis under ASD, but for 8 of the children the sudden onset of symptoms related to that of ASD was linked to the administration of the MMR vaccine, based on the parents’ testament (1). Wakefield doesn’t directly state that vaccines caused the development of ASD symptoms in the children, but strongly suggests there is a correlation between the two events. He does so by stacking evidence which supports the correlation such as that of the parents’ opinions that their child’s behavior shifted within 2 weeks of the administration of the vaccine, mentioning other studies which also observed an association between the MMR vaccine and onset of behavioral symptoms, and conducting brain tests, especially for fragile x syndrome which came out negative, and deemed the child did not have genetic predispositions towards developing ASD (1). However, the parents’ evidence of behavioral changes post-vaccinations can be seen as a Hindsight bias, as they are recollecting the past events. It is also a possibility that