The human immune system begins to develop before the 12th week of fetal life
Indicate whether the statement is true or false
True
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In ____ bilingualism, a person learns two different languages at the same time
a. additive b. sequential c. simultaneous d. subtractive
A pattern of family interaction in which the child misbehaves, the parents tries to punish the child but is ineffective, and the child escalates the misbehavior until the parents give up is what Gerald Patterson and his colleagues have called a
A. reciprocating family environment. B. dysfunctional family environment. C. coercive family environment. D. toxic family environment.
A music teacher had noticed that some students went to pieces during exams. He wanted to test whether this performance anxiety was different for people playing different instruments. He took groups of guitarists, drummers and pianists (variable = ‘Instru’) and measured their anxiety (variable = ‘Anxiety’) during the exam. He also noted the type of exam they were performing (in the UK, musical instrument exams are known as ‘grades’ and range from 1 to 8). He wanted to see whether the type of instrument played affected performance anxiety when controlling for the grade of the exam. The SPSS output below shows the final tables. Which of the following statements best reflects what these tables tells us?
A. Guitarists were significantly less anxious than drummers, but were about as anxious as pianists, and drummers were about as anxious as pianists. B. Guitarists were significantly less anxious than pianists and drummers, and drummers were significantly less anxious than pianists. C. Guitarists, drummers and pianists were all about equally anxious. D. Guitarists were significantly less anxious than pianists and drummers, and drummers were significantly more anxious than pianists.
What were the means being statistically examined?
An industrial psychologist tests three different keyboard designs for a new computer to determine which one produces optimal performance. Four computer operators are given text material and told to type it as fast as they can. They spend 3 minutes on each keyboard with a 10-minute rest between each keyboard. The number of errors committed are recorded. The researcher wants to know if there is a significant difference in errors among the three types of keyboards (called Keyboard A, Keyboard B, and Keyboard C). The one-way, repeated-measures ANOVA revealed that there was a significant difference in number of errors made based on the type of keyboard being used, F(2, 38) = 6.91, p = .003, ?p2 = 0.267. Bonferroni-corrected multiple comparisons revealed that more mistakes were made with Keyboard C (M = 6.00, SD = 2.18) than with Keyboard B (M = 4.00, SD = 2.05), p < .01. There was no difference between Keyboard A (M = 5.00, SD = 2.16) and Keyboard B, p = .59 or between Keyboard A and Keyboard C, p = .71.