title: The Structured Employment Interview: An Examination of Construct and Criterion Validity

authors: Levine, Anne B.

subjects: selection

abstract: This study extends the literature on interview validity by attempting to create a structured employment interview with both construct- and criterion-related validity.  For this study, a situational interview was developed with the specific purpose of enhancing the interview's construct validity while retaining the interview's predictive power.  To enhance the construct validity, two guidelines were applied to the creation of the interview based on previous research in interview and assessment center literature limit the number of applicant characteristics to be rated to 3; and (2) ensure that the dimensions to be measured are conceptually distinct. Based on these two guidelines, three constructs were chosen for assessment of real estate sales agents extraversion, proactive personality and customer orientation.  
The critical incident technique was used to develop six interview items.  To test the construct validity of the interview, the six items were correlated with other measures, specifically, self-report questionnaires and managers' ratings, of extraversion, proactivity and customer orientation.  Correlations were weak, at best (rs ranged from -.06 to .25).  To test the predictive validity of the interview, the six items were correlated with both objective and subjective measures of performance.  Predictive validities were stronger, ranging from .23 to .30.  These findings are consistent with previous research on employment interviews which have found that although the predictive validity of the interview is strong, the construct validity is very weak, leaving researchers to wonder what it is that the interview is actually measuring. 
Possible explanations for these findings are offered, and the implications of these findings are discussed.

text: The Structured Employment Interview: An Examination of Construct and Criterion Validity This study extends the literature on interview validity by attempting to create a structured employment interview with both construct- and criterion-related validity.  For this study, a situational interview was developed with the specific purpose of enhancing the interview's construct validity while retaining the interview's predictive power.  To enhance the construct validity, two guidelines were applied to the creation of the interview based on previous research in interview and assessment center literature limit the number of applicant characteristics to be rated to 3; and (2) ensure that the dimensions to be measured are conceptually distinct. Based on these two guidelines, three constructs were chosen for assessment of real estate sales agents extraversion, proactive personality and customer orientation.  
The critical incident technique was used to develop six interview items.  To test the construct validity of the interview, the six items were correlated with other measures, specifically, self-report questionnaires and managers' ratings, of extraversion, proactivity and customer orientation.  Correlations were weak, at best (rs ranged from -.06 to .25).  To test the predictive validity of the interview, the six items were correlated with both objective and subjective measures of performance.  Predictive validities were stronger, ranging from .23 to .30.  These findings are consistent with previous research on employment interviews which have found that although the predictive validity of the interview is strong, the construct validity is very weak, leaving researchers to wonder what it is that the interview is actually measuring. 
Possible explanations for these findings are offered, and the implications of these findings are discussed.

year: 2006

title: Bovine mastitis and ecology of Streptococcus uberis

authors: Pryor, Shona Marie

subjects: Bovine

abstract: Bovine mastitis caused by Streptococcus uberis is a common problem in pasture-based dairying systems. This study examines both the ecology of S. uberis and infection of the bovine mammary gland on a New Zealand dairy farm. Initially, the REP-PCR strain typing method was developed and the potential of MALDI-TOF mass spectrometry evaluated as a strain typing method. While strain-specific mass spectra were obtained with MALDI-TOF mass spectrometry, the irreproducibility of spectra was its major downfall. With further work, this rapid method could be very useful for strain typing S. uberis on a large scale. Using optimised REP-PCR and anchored typing methods, multiple S. uberis strains were isolated and strain typed from the dairy environment, including farm races and paddocks, faeces, teat skin, the cow body and from intramammary infections. High strain diversity was observed in all sampled locations; however, some strains were found at more than one site, suggesting transmission may occur between the environment and cows. The most likely means of S. uberis distribution throughout the dairy farm was via excretion with faeces and, although not all cow faeces contained this pathogen, the gastrointestinal tract of some cows appeared to be colonised by specific strains, resulting in persistent shedding of this bacteria in the faeces.
Infection of the mammary gland is likely to occur through contamination of the teat skin with highly diverse environmental strains of S. uberis. However, only one or two strains are generally found in milk from mastitis cases, suggesting that, although infection may arise from a random or opportunistic event, a strain selection process may take place. Intramammary challenge with multiple strains of S. uberis revealed that selection of a single infective strain can occur within the mammary gland. The predominance of one strain over others may be related to production of virulence factors allowing enhanced ability to establish in the gland and evade the immune response, or due to direct competition between strains through the production of antimicrobial factors such as bacteriocins. In addition to strain-specific factors, the individual cow and quarter response may play an important role in the development of infection and selection of the infective strain.
Using results from this study, a model of S. uberis strain transmission has been proposed, which includes potential mechanisms of infection and persistence of S. uberis within the mammary gland.

text: Bovine mastitis and ecology of Streptococcus uberis Bovine mastitis caused by Streptococcus uberis is a common problem in pasture-based dairying systems. This study examines both the ecology of S. uberis and infection of the bovine mammary gland on a New Zealand dairy farm. Initially, the REP-PCR strain typing method was developed and the potential of MALDI-TOF mass spectrometry evaluated as a strain typing method. While strain-specific mass spectra were obtained with MALDI-TOF mass spectrometry, the irreproducibility of spectra was its major downfall. With further work, this rapid method could be very useful for strain typing S. uberis on a large scale. Using optimised REP-PCR and anchored typing methods, multiple S. uberis strains were isolated and strain typed from the dairy environment, including farm races and paddocks, faeces, teat skin, the cow body and from intramammary infections. High strain diversity was observed in all sampled locations; however, some strains were found at more than one site, suggesting transmission may occur between the environment and cows. The most likely means of S. uberis distribution throughout the dairy farm was via excretion with faeces and, although not all cow faeces contained this pathogen, the gastrointestinal tract of some cows appeared to be colonised by specific strains, resulting in persistent shedding of this bacteria in the faeces.
Infection of the mammary gland is likely to occur through contamination of the teat skin with highly diverse environmental strains of S. uberis. However, only one or two strains are generally found in milk from mastitis cases, suggesting that, although infection may arise from a random or opportunistic event, a strain selection process may take place. Intramammary challenge with multiple strains of S. uberis revealed that selection of a single infective strain can occur within the mammary gland. The predominance of one strain over others may be related to production of virulence factors allowing enhanced ability to establish in the gland and evade the immune response, or due to direct competition between strains through the production of antimicrobial factors such as bacteriocins. In addition to strain-specific factors, the individual cow and quarter response may play an important role in the development of infection and selection of the infective strain.
Using results from this study, a model of S. uberis strain transmission has been proposed, which includes potential mechanisms of infection and persistence of S. uberis within the mammary gland.

year: 2008

title: A Maori and Psychology Research Unit

authors: Nikora, Linda Waimarie

subjects: Maori

abstract: Little psychological information and few applications have been informed by Maori centred research. The psychological research base available to support prevention or change strategies aimed at Maori is almost non-existent. Most information and applications are imported from outside of Aotearoa/New Zealand and are seldom subjected to vetting procedures to ensure adequacy and appropriateness. Even though numbers have changed slightly in the last 10 years, there are still too few Maori in the professional ranks of psychology, both as practitioners, teachers and researchers. More of everything is needed, and it was needed yesterday. At the University of Waikato, staff of the Psychology Department have recognised the need to support positive changes to rectify that situation described above.

This paper describes the fledgling development of a Maori and Psychology Research Unit and how it is intended to promote Maori centred-research, Maori-partnership research, and the scholarly development of Maori professionals. The first section deals with issues and challenges the MPRU expects to face in its development and is written by the first author. The second section describes the nature of learning and support that the MPRU will afford to a new generation of Maori researchers and scholars within the discipline of psychology. This section is written by the second author.

text: A Maori and Psychology Research Unit Little psychological information and few applications have been informed by Maori centred research. The psychological research base available to support prevention or change strategies aimed at Maori is almost non-existent. Most information and applications are imported from outside of Aotearoa/New Zealand and are seldom subjected to vetting procedures to ensure adequacy and appropriateness. Even though numbers have changed slightly in the last 10 years, there are still too few Maori in the professional ranks of psychology, both as practitioners, teachers and researchers. More of everything is needed, and it was needed yesterday. At the University of Waikato, staff of the Psychology Department have recognised the need to support positive changes to rectify that situation described above.

This paper describes the fledgling development of a Maori and Psychology Research Unit and how it is intended to promote Maori centred-research, Maori-partnership research, and the scholarly development of Maori professionals. The first section deals with issues and challenges the MPRU expects to face in its development and is written by the first author. The second section describes the nature of learning and support that the MPRU will afford to a new generation of Maori researchers and scholars within the discipline of psychology. This section is written by the second author.

year: 1998-07-01