The self-fulfilling prophecy or Pygmalion effect

The Self-fulfilling Prophecy or Pygmalion Effect:
The self-fulfilling prophecy or Pygmalion effect

Consciously or not we tip people off as to what our expectations are. We exhibit thousands of cues, some as subtle as the tilting of heads, the raising of eye brows or the dilation of nostrils, but most are much more obvious. And people pick up on those cues.