The is the protective barrier established by the police by which they protect one another from outsiders, often even refusing to aid police superiors or other law enforcement officials in investigating wrongdoing of other officers.

Running and sleep. sufficient sleep is important for adolescents for both their neural and psychological development. despite this, daytıme sleepiness and poor physical and psychological functioning related to chronic sleep disturbances are common. there is a growing body of evidence that exercise is associated with both better sleep and improved psychological functioning sixty participants were recruited from a high school in northwesten switzerlandthey were randomly assigned to either a running group or a control group, 30 to each group the running group ran every moming for a little over 30 minutes on weekdays for a three-week period. all participants used a sleep log for subjective evaluation of sleep, and sleep was also objectively assessed at the beginning and end of the study using a sleep electroencephalographic device that measured quantities such as sleep efficiency and time spent in the four different sleep phases. running was found to have a positive impact on both objective and subjective measures of sleep functioning what are the explanatory variable(s) and the response variable(s)? (a) outline the design of the experiment (b) (c) here are some more details on the treatment and control groups. all participants arrived at school at 7 a. m., and the running group did two laps on the track and then ran cross countrv in groups of at least four people for 30 minutes the control group remained seated at the track, worked on horpework. and interacted with each other. when the runners returned, all participants prepared for school and ate a breaktast that was provided. iwhy do you think the experimenters had the control group arrive at 7 am interact withdassmates and have breaktast together? explain. do you think having the control eroup do these activities is important for the types of conclusion that can be reached? how?

Which of the following methods could be considered a "best practice" in terms of informing respondents how their answers to an on-line survey about personal information will be protected? respondents are informed that investigators will try to keep their participation confidential; however, confidentiality cannot be assured. respondents are informed that a research assistant will transfer all the research data to a password-protected computer that is not connected to the internet, via a usb flashdrive. the computer is located in a research team member's office. the investigator uses the informed consent process to explain her institution's method for guaranteeing absolute confidentiality of research data. the investigator uses the informed consent process to explain how respondent data will be transmitted from the website to his encrypted database without ever recording respondents' ip addresses, but explains that on the internet confidentiality cannot be absolutely guaranteed. the investigator uses the informed consent process to explain how respondent data will be transmitted from the website to his encrypted database without ever recording respondents' ip addresses, but explains that on the internet confidentiality cannot be absolutely guaranteed

According to the world bank, e. u. remittances to senegal were $1,005,728,139$1,005,728,139 in 2015. senegal's gross domestic product (gdp) was $13,779,570,750$13,779,570,750 in 2015. what percentage of senegal's 2015 gdp is represented by the remittances? round your answer to one place after the decimal. remittances as percent of gdp: %% based on the washington post article, e. u. launches $2 billion plan to keep africans from migrating, which explanation correctly explains why senegal's government would or would not implement policies to restrict illegal migration from senegal to the european union? because remittances represent such a large percentage of senegal's gdp, senegal's government faces an incentive to do nothing to stop illegal migration to the european union. because remittances are sent from senegalese workers in senegal to their family members in the european union, senegal's government faces no incentive to crack down on illegal migration. because remittances represent such a small percentage of national income, senegal's government does not find it worth its time to implement policies to prevent illegal migration. because remittances are sent from senegalese workers in senegal to their family members in the european union, senegal's government faces a large incentive to crack down on illegal migration.