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Current time:0:00Total duration:4:51

Video transcript

I'm sure you've heard of the term first impressions camera is because it's common line of thought that your first impression is pretty important and it's important because it's long strong and easily built upon now what do I mean by each of these well it's long so when a first impression is formed it tends to last a long time whether it's positive or negative - its strong so once someone has a first impression of you it's pretty hard to overcome them and three it's easily built upon so this is a little bit more subtle and what this means is that when someone has a first impression of you they will subsequently really kind of put extra emphasis on bits of information that helps to support that first impression so someone thinks that you're really messy they may not put as much emphasis on the fact that your desk is tidy every single day afterwards but if you've been in your room or and something else is not quite right or with your bin is overflowing they may go aha look I knew it that helps to support my first impression that this is a messy person and when we think about first impression and the fact that it actually seems to be more important than other bits of data is called the primacy bias now that's the first bit of data let's think about other bits of data that might useful have you ever heard the term you're only as good as your last game you're only as good as your last match you're only as good as your last cheeseburger well what does this suggest this suggests that your most recent actions are also very important and people will place a lot of emphasis on your recent actions and your recent performance and it appears that compared to past performances your recent performance may have some extra weight to it this also has a name and this is called the recency bias so what I'm going to do is look at the graph at the bottom of the screen and I want to label the axis so the and vertical axis is going to be retention and this is really talking about memory and the horizontal axis is time and this graph can actually represent bits of data as in some experiments have been done they look at a super sequence of items that somebody has to remember or we can think about it as the social data that somebody can obtain from encounters and I'm actually going to draw a graph for you and what this graph represents is the time periods in which we seem to recall most information on the information seems to be most important to us and we look at this graph and if we think about first of all the primacy bias we see that the first chunk of information that we get over here seems to be pretty important and also later on the second chunk of information that we get the recency bias also appears to be pretty important and in the middle we have a period of time which is of quite variable duration given that this graph can apply to lots of different events or a specific event and the information during this time period seems to be not as important as information that we have very early on or very recently even within this middle period if there was a significant event or something that's 'rememorable so for example if the person does something that elicits a prominent emotional response in you or is very unusual you may very well have a blip and you remember that event much more or if it's a sequence of items and that you're trying to remember and the middle of items you see a picture of a close family member and all the other items are fairly nondescript you may have a big blip there but in general if all the items are pretty much the items you're kind of remembering in the memory tests are pretty much the same or the persons events are pretty damn typical on a day to day basis the earlier events that we can see on this chart and the most recent events will be the most memorable for you so it appears that when we form impressions of other people the most important parts of forming oppression are one the early impressions that we formed because they're long strong and easy built upon and to the most recent actions a person has done towards us everything else in the middle seems to be not quite as important there was a bit of debate whether primacy bias or the recency bias is stronger and I think it may very well vary on the situation and there's no unanimous verdict at the moment