Bill is a Brazilian immigrant. Bill’s work before joining the group was terrific, a breakthrough in combining position data and financial modeling. He joined a new group to clean up a financial database. His work relied on cooperation from the IT department, and they claimed to be too busy to help. He made no substantive progress for months. Peter, the executive for the division, did not like Bill from the start. When he heard of the delays, he blamed Bill. This is an example of:

Confirmation bias.

Explanation:

Confirmation bias is a type of cognitive bias, it is a person's tendency to favor information that confirms their assumptions, preconceptions or hypotheses, regardless of whether they are true or not. The bias interpretes more positively those facts that basically support previous opinions. It is a cognitive prejudice that encourages one to continue in accordance with beliefs in order to avoid contradicting oneself. Peter used this type of bias, he searched and considered more intensively and selectively the information that confirmed his statement to blame Bill. This confirmation bias happens due people already have preconceived ideas from the start and to confirm they tend to collect evidence and selectively recall information and interpret it as a whole in a biased way.

explanation:

sorry english

world war i had a devastating effect on german-americans and their cultural heritage. up until that point   german-americans, as a group, had been spared much of the discrimination, abuse, rejection, collective mistrust experienced by so many different racial and ethnic groups in the history of the united states. indeed, over the years, they had been viewed as a well integrated and esteemed part of american society. all of this change with the outbreak of war.