I thought I'd post this up for interest in response to LR a year ago on the subject of eyewitness reliability.
So called eyewitnesses who were probably dead when the gospels were concocted. Eyewitness testimonies are often way off the mark, especially when relating the less than credible events attributed to the long dead, Jesus.
A shooting in Sweden in 2013 was filmed on two mobile phones and the footage compared with eyewitness testimony:
The analysis showed clear differences between the witness testimonies and the film. Elements associated with perceived threat, for example, the assailant’s armament and movement direction and number of shots fired, were remembered fairly accurately. However, most witnesses poorly recollected when, that is, after which shot, the assailant fell to the ground. Moreover, memory of the actual order of events was altered and important aspects omitted that were crucial from a legal point of view.https://tinyurl.com/2pexdy7cElements associated with perceived threat were remembered fairly accurately, and importantly, were enough to confirm that the policeman had killed the perpetrator in self defence:
All 13 witnesses reported seeing the knife, and several were even more specific, using terms like “kitchen knife”, “stainless knife”, or “a big silvery knife”. Furthermore, all 13 witnesses reported hearing the police shouting “drop the knife”.However, only 1 out of 13 eyewitnesses reported, correctly according to the film, that the perpetrator was already on the ground when the policeman fired the final shot. The others reported the final shot being fired before he fell.
This seems to have potentially led to claims that he shot him more times than was necessary and therefore illegally. But the overall picture is of the perpetrator trying his best to attack the officer, who fired in self defense.
So applying this to the gospels, perhaps the details that involved a high level of stress for the witnesses were recalled more accurately. I'm assuming that the authors had access to eyewitnesses. The calming of the storm, the conversation at the last supper, when the disciples became distressed, and the conversation between Jesus and Thomas after the resurrection,
You could also relate this study to how perhaps one gospel would record accurately a particular detail crucial to understanding the progression of events, such as the timing of the last supper or the resurrection appearances in Jerusalem, whereas the others might be vague or focus on Galilean appearances.