Occupational Health Psychology Psychology of Health and Safety Fernand Léger, 1950, Builders with Rope Occupational Health Psychology • OHP concerns the application of psychology to improving the quality of work life, and to protecting and promoting the safety, health and well-being of workers” NIOSH OHP Issues • • • • • • • • Accidents/injuries Health promotion Musculoskeletal disorders Physical illness Psychological well-being Stress Violence Work-family Accident Illness Stressor Violence MSD Work/Family Accident Illness Strain Violence MSD Work/Family OHP Field • Next major area of psychology • Interdisciplinary – Within psychology – Public health, medicine, nursing, safety • Society for OHP (SOHP) – www.sohp-online.org • European Academy of OHP (EA-OHP) – www.ea-ohp.org • Journal of OHP • Work & Stress History of SOHP • 2001 USF Meeting – Established OHP Forum – Representatives from 11 schools who got APA/NIOSH training grants. – About 35 attended – Set goals to promote OHP • 2003 Portland State U meeting – Continued discussion – Serious talk about starting SOHP SOHP Membership • 2005 – 31 Founding members donated $100 to start society • 2006 – 95 Charter members joined. • 2012 SOHP Activities • Members receive Journal of Occupational Health Psychology • Joint sponsor of Work, Stress & Health conference • Newsletter • Promote OHP • Website – Clearinghouse for OHP information OHP Training • 11 schools in US got APA/NIOSH grants – USF 2001 • • • • • Most associated with I/O Psychology Specialization attached to core discipline PhD level training Prepares for academic-research and practice Supported by NIOSH – Colorado State, Portland State, U Conn, USF OHP At USF • • • • • Specialization for I/O and other students Interdisciplinary with public health and nursing Coursework and research collaboration Sunshine Education and Research Center (ERC) NIOSH-funded OHP training grant for I/O students – Stipends – Conference travel funds • Ten OHP trainees from psychology National Institute for Occupational Safety and Health (NIOSH) • Promote health and safety – Training – Research – Outreach • • • • • Internal research on health & safety External funding for research and training ERCs Program grants National Occupational Research Agenda NORA NIOSH ERCs • 17 throughout US • Sunshine ERC at USF • Promote workplace health safety – Graduate training programs – Research – Continuing education/outreach • Supported through NIOSH center grants Sunshine ERC • Began 1998 • Four Colleges – – – – Public Health (EOH) Nursing Medicine Arts and Sciences (Psychology) • Director: Tom Bernard (EOH) • Deputy Director: Candace Burns (Nursing) Sunshine ERC Programs • Five training programs – – – – – Industrial Hygiene Occupational Health Medicine Occupational Health Nursing Occupational Health Psychology Occupational Safety • Continuing Education – Occupational safety – Hazardous materials Program Focus • Industrial hygiene – Effects of hazardous substances • Occupational health medicine & nursing – Treatment of occupational disease/injury • OHP – Psychological factors in health/safety/well-being • Occupational safety – Safety policies and practices • Occupational Ergonomics – Design of the physical environment Exposures • Acute: Incident leading to outcome – Risk behavior Accidents/injury – Posttraumatic stress • Chronic: Degenerative disease/disorder – Stressors Cardiovascular disease – Physical activity Musculoskeletal disorders MSD Concepts • • • • Prevention and health promotion Healthy organization—for whom? Positive health—not just absence of disease Public health model – Primary prevention—change job for everyone – Secondary prevention—help those at risk – Tertiary prevention—intervene after sick/injured Week 3 Occupational Stress Concepts • Stressor: Environmental condition requiring adaptation – Environmental versus perceived • Appraisal: Cognitive processing of stressor • Strain: Response to stressor – Psychological – Physical – Behavioral • Coping: Way of dealing with stressors – Emotion vs. Problem • Social support Basic Stress Model Stressor Strain Moderators Control Coping Personality Social Support Appraisal Stressors • • • • • Objective vs. psychosocial Task-based vs. social Challenge vs. hindrance Acute vs. chronic Exposure Methodology • Human reports – Self-report – Other-report • Quantitative vs. qualitative • Too subjective? • Physical measures – Stressors – Strains Confounds • Personality • Demographics • Confounded stressors – Workhours confounded with work-family conflict – Role ambiguity confounded with poor management • Establish relationship and rule out alternatives Design Issues • Alternative measures (to self-report) – Lack precision • Longitudinal designs – Arbitrary points in time Week 4: Control and Buffering Factors that Buffer Effects of Stressors • • • • Control Social-Support Coping Reverse Buffering Control-Demand Model High Low Control Strain High Control Low Low High Stressor Control • Control relates to stressors • Control relates to strains • Buffering effect inconsistent – Methodological issues • Small samples • General control Types of Control • Primary: Control the environment • Secondary: Control reaction to the environment Social Support • Thought to buffer like control • Reverse buffering – Demands of social support • Instrumental support • Emotional support Coping • • • • How people deal with stressors Problem-focused coping Emotion-focused coping Style vs. situational Control, Coping, and Support • Focus on stressor – Primary control – Instrumental support – Problem focused coping • Focus on reaction to stressor – Secondary control – Emotional support – Emotion focused coping Week 5: Schedules & WorkFamily Schedules: Time Demands • Number of hours – Daily, Weekly • Scheduling of hours – Shift work – Night work – Flex time • Conflicting hours – Work-family conflict (WFC) Hours/Day • 5 days/8 hour standard • 4 days/10 hour • Longer work days inconsistent results – – – – More fatigue? More days off Preferred by employees More satisfaction Hours/Week • • • • Magic number 48/week Little relation to psychological strain Relates to heart disease European Union 48 hour rule – 48 hours/week – 11 hours off/24 hours Shifts • Rotating Shifts and night work • Physical issues – Sleep disturbance – Stomach distress – More accidents/injuries • Social issues – Interference with nonwork activities – Higher divorce rate Work-Family Conflict • Work & Nonwork interference – Work to family: WIF – Family to work: FIW • Types – – – – Time-based Strain-based Behavior-based Energy-based WFC as Stressor • • • • Job dissatisfaction Family dissatisfaction Psychological strain Physical strain – Symptoms – Cortisol elevation Interventions • Flextime • Family-friendly benefits • Family supportive organization climate Week 6: Cross-National Issues CC/CN Basic Question • How do cultural and national differences relate to job stress? Why Is This Important • Psychology the study of humans not just Americans • Explore principles in the context of different cultural/national conditions • We’re curious scientists • The field is interested, i.e. it’s publishable Types of CC-CN studies • • • • International replication in a single country Comparison of two countries Comparison of multiple countries Country-level analysis of culture-national variable with other variables International Replication • Many examples of job stress and other studies outside of North America • Jia Lin Xie 1996: Test of Karasek’s demand-control model in PRC – Anxiety, depression, and job satisfaction – Support for interactive effects in sample of 1200 Chinese Comparison of Two Countries • Narayanan, Menon, Spector (1999) International Journal of Stress Management • Comparison of India and U.S. • Open-ended Stress Incident Record • Stress incident in prior 30 days • Content analyzed • University clerks: 130 India, 133 U.S. Most Frequent Stressors By Country Stressor India U.S. Lack of control Work overload 0% 0% 23% 26% Lack of clarity/ structure Constraints 27% 0% 15% 0% Conflict 12% 17% Reactions By Country Reaction Anger India U.S. 0% 18% Resignation 20% 0% Talk to boss 5% 60% 35% 17% Talk to family Comparison of Multiple Countries • Peterson, Smith et al. 1995 • Spector, Cooper, Sanchez, Sparks, O’Driscoll, et al. 2002 Methodological Issues • Measurement equivalence – Can measures be transported? • Sample equivalence – Are working populations similar Approaches to Sample Equivalence • Choose similar working groups • Not always possible due to economic differences Approaches To Scale Equivalence • Translation—Back Translation • Analysis of equivalence – Comparison of factor structure with SEM – Comparison of item response with IRT • Create cross-national scales – Parallel development in more than one place Parallel Scale Development • Spector, Sanchez, Siu, Salgado, Ma, 2004, Applied Psychology: An International Review • Development of scales for new constructs • Avoid ethnocentrism with multi-national team – American, Chinese, and Spanish colleagues • Sample equivalence with similar samples Background • Asians score much lower than Americans on locus of control • View of passive Asian • Primary vs. Secondary control – Primary: Direct control of environment – Secondary: Control of reaction to environment • Socioinstrumental control: Control through development of social networks Background 2 • Individualists focus on primary control • Collectivists focus on secondary and socioinstrumental control Hypotheses/Purpose • Americans will score higher than Chinese on locus of control • Chinese will score higher than Americans on secondary and socioinstrumental control • Scale exists for LOC • Need to develop scales for other forms of control Scale Development 1. Spector-Sanchez developed definitions of primary-secondary and socioinstrumental 2. Each partner wrote items to tap constructs 3. Large item pool administered to 126 employed students 4. Item analysis reduced to 11 items (Secondary) and 24 items (Socio) 5. Administered as part of larger questionnaire in PRC, Hong Kong, and U.S. Items • I take pride in the accomplishments of my superiors at work (vicarious control) • I sometimes consider failure as payment for future success (interpretative control) • It is important to cultivate relationships with superiors at work to be effective (socio) • You can get your own way if you learn how to get along with others (socio) Coefficient Alphas Country Secondary Socioinstru Job mental Satisfaction Hong Kong .87 .91 .82 PRC .70 .88 .65 U.S. .76 .91 .89 Comparison of Means Variable Hong Kong PRC U.S R2 Secondary 43.8A 46.0B 45.6B .01 Socio 93.4A 97.1B 91.9A .02 Work LOC 51.0B 57.0C 40.2A .38 Results/Conclusions • Scale internal consistency did not degrade when used in China • Chinese as high or higher than Americans on new control scales • Differences on new scales small • Differences on Work LOC huge • View of passive Asians incorrect based on American view of control Concluding Thoughts • CC-CN research in its infancy • Evolving from descriptive to theory testing studies • Challenging methodological issues • International colleagues eager to collaborate • Lots to be done Week 7: Negative Affectivity Affect Central Role in Stress • Emotional response – Psychological Strain – Immediate response to stressor • State vs. Trait Negative Affectivity • Watson & Clark • Noted high correlations among measures of affect – Trait anxiety – Neuroticism – Depression • Concluded they are all manifestations of NA – Tendency to experience negative emotion across situations and time Nature of NA • NA mainly anxiety and related states/traits • Other emotions distinct – Anger – Depression – Boredom The Great Debate about NA • What is the role of NA trait in stress research? Watson, Pennebaker, Folger 1986 • NA is a confounder • Questions validity of survey research • If correct, reshapes entire field Brief, Burke, George, Robinson, Webster, 1988 • Test of Watson et al. • Conclude they are correct • Recommend partialling NA routinely Chen & Spector, 1991 • Another test of Watson et al. • Conclude general confounding does not occur • Amount of overlap variable across measures • Criticized Brief et al. for item overlap and affect-laden measures Burke, Brief George, 1993 • Reanalyzed data from Frese and Spector • Concluded confounding a problem • Agrees with Watson et al. and Brief et al. Spector, Zapf, Chen, & Frese, 2000 • Reanalyzed Burke et al reanalysis & came to different conclusions • Summarized evidence for confounding • Discusses several NA mechanisms • Argues against routine partialling of NA Week 8: Interventions Level of Intervention • Primary: Sound management – Positive impact on performance • Secondary: Stress management training – Quick fix • Tertiary: EAPs – Failure? Primary • • • • Selection/placement Training Leadership Reward systems – Justice • Climate – Safety, civility, violence • Empowerment • Petterson study Secondary • Skills at handling stressors/strains • Bruning – Exercise, relaxation, management skills (primary?) • Ganster – Stress management Tertiary: EAPs • Popular among large organizations • Employee benefit • Multiple purposes – Stress – Alcohol/drug problems – Psychological problems • Self vs. supervisor referral • Research inconsistent on effectiveness Semmer Chapter Comments • More attention to task than social stressors • Concludes interventions effective – Intervention-stressor/strain match unclear • Health Circle • Job satisfaction general well-being indicator • Strains persist after stressor removed – “I’ll remove the cause but not the symptom” • Tim Currey to Brad and Janet in Rocky Horror Week 9: Spring Break Week 10: Appraisal Vs. Environment Debate Week 11: Cardiovascular disease, Immune Functioning, and Posttraumatic Stress Psychological Factors Important • Stress • Exposures through behavior – Over-eating – Smoking • Diseases – Cardiovascular – Cancer – Diabetes Points from Landisbergis • No hypertension in hunter-gatherers, herders, or family farmers • SES and stress risk factors • Job control important work factor • Threat-avoidance vigilant work • Econeurocardiology—Social environment and CNS • Work and family stressors compound Relative Weight • Parkes • Obesity important risk factor – Heart disease – Cancer – Diabetes • RW = W/H2 (W in kg, H is M) • I am 21.3 Model of Physical Illness Emotion Stressors Physiology Catecholamines Cortisol Physical Symptoms Disease Job Stressors & Cardio Response Fox, Dwyer & Ganster • 198 hospital nurses • Workload – Patient load & Contact • Perceived control • Blood pressure • Cortisol High Low control BPSy Work High control Low Low High Workload High Low control Cortisol Home High control Low Low High Workload Stressor-Physical Symptom Meta-Analysis k Mean wr Workhours 5 .14 Workload 28 .31 Role ambiguity Role conflict 16 .27 16 .38 4 .30 Abuse Ashley Nixon and Joe Mazzola Week 12: Accidents and Safety Not So Fun Facts • US 2005 – 5702 workplace fatalities – Rate declining recent years: 4/100,000 – 4.2 million illnesses/injuries • Least safe occupations – Agriculture/fishing/forestry/hunting – Mining • Safest – Education/health service – Services Gender and Safety • Men – 54% of workforce – 93% of fatalities • Reasons – Men in more dangerous jobs – Less safe behavior? Accident causes • Unsafe conditions • Unsafe behavior • How do we get management to make conditions safer? • How do we get employees to engage in safer behavior? Areas of Concern • Physical conditions – Equipment – Lighting • Psychological factors – Job skill – Personality – Stress • Organizational factors – Leadership – Safety climate Psychological Factors • Personality – – – – People high on openness to experience Low on conscientiousness Low on agreeableness Grumpy, lazy, sensation seekers • Job Dissatisfaction • Job stress – – – – Divorce Heavy workload Unclear expectations Conflicting job demands Organizational Factors • Balance between production and safety – Higher accident rates with incentive system (piece rate) vs. hourly • Workplace norms – Rickett et al. Hoist usage in hospitals • Beliefs about reactions of others related to use • Safety climate – Shared perception that safety is important Safety Climate • Shared perception that safety is important • Reflected – Policies – Practices • Supervisor main source of climate – Actions (model safe working) – Words (talks about safety) • Related to – Safe behavior – Accidents/injuries Focus of Intervention • Recruitment/selection: Hire safe people • Training – Safe procedures – Skills – Attitudes • Control stress • Goal setting – Careful to affect behavior and not just reporting • Leadership – Mentoring – Modeling – Support Scale Development Project Scale Development Steps • • • • • Define Construct Write items Administer Item-analysis Validity evidence Item Analysis • • • • Goal: Internally consistent scale Items are intercorrelated Reflect single construct Coefficient alpha: Measure of internal consistency • Item-remainder: Correlation of item with sum of other items in scale Internal Consistency • Coefficient alpha – Standard at least .70 – Looks like correlation • Item-remainder – Take items with highest values – Typically .30 or more • Alpha with item removed – Indicates if item contributes to internal consistency – Delete if alpha is larger without item Data Analysis Steps • • • • Enter data First variable is ID Reverse score oppositely worded items Subtract item from difference between high and low value – Subtract item from 7 for 1 to 6 scale – Subtract item from 5 for 1 to 4 scale • Run item analysis • Refine measure • Relate measure with other variables Refining the Scale • • • • Delete items that reduce alpha Delete one at a time iteratively Sum final items into scale score Relate scale with other variables – T-test or correlation for 2 group differences (e.g., gender) – Correlation with continuous variables (e.g., job satisfaction) – ANOVA for multi-group differences (e.g., race) Item Analysis Example • Violence Climate Scale: VCS • Three subscales – Policies – Practices – Pressure for unsafe performance • Example – Practices (First 4 items) – Pressure (Last item) 3. Management in this organization quickly responds to episodes of violence. 4. Management in this organization requires each manager to help reduce violence in his/her department. 18. Management encourages employees to report physical violence. 19. Management encourages employees to report verbal violence. 36. In my unit in order to get the work done, one must ignore some violence prevention policies. Variables Alpha ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ Raw 0.753049 Deleted Correlation Variable with Total Alpha ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ x3 0.622879 0.673323 x4 0.627735 0.670671 x18 0.679266 0.650681 x19 0.719180 0.632802 x36 0.091843 0.865910 Variables Alpha ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ Raw 0.865702 Deleted Correlation Variable with Total Alpha ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ x3 0.672844 0.845290 x4 0.665091 0.848473 x18 0.751180 0.813753 x19 0.774005 0.803730 What To Report • • • • Item-remainder statistics for each item Alpha if item removed for each item Overall coefficient alpha Mean, standard deviation and range of total scale and other variables in study • Relationships with other variables • Factor analysis of scale (optional) Week 13: SIOP Week 14: Aggression and Violence Thomas McIlvane • • • • • • Postal Employee Royal Oak, Michigan November 14, 1991 Killed 5 Wounded 4 Harassed and bullied by supervisors • Fired for insubordination What Are the Homicide Risks? • 5.6% of homicides at work (2000) – 677 out of 12,000 in US • 8% by coworkers – 54 cases in 2000 • 84% male victims • Female deaths rare – 2000 151 homicide plus suicide at work • Workplace much safer than home and street Workplace Nonfatal Violence Common in many jobs Workplace Verbal Aggression Common in all jobs Helen Green • Successfully sued Deutsche Bank in the UK • Secretary • Hospitalized for stressrelated disorder • Abused and bullied at work • Awarded $1,575,000 Types of Violence/Aggression • Type 1: Strangers committing a crime – Cab driver, Convenience store clerk • Type 2: Clients, customers, patients – Health care workers, nurses • Type 3: Coworkers, supervisors – Any job • Type 4: Relationship – Any job How Prevalent • 2 million violent episodes/year in U.S. – NIOSH Report • 16 million verbal aggression incidents/year in U.S. – Northwestern National Life Insurance Company Type 1 & 2 Factors Physical control over others Handle weapons Physical care of others Contact with drug takers Contact with alcohol drinkers Decisions over others LeBlanc & Kelloway, 2002 Exercise security functions Work alone Go to client’s home Interacted with frustrated Emotional care of others Guard valuables Type 2 and 3 Aggression & Violence: Emotion-related Stress Conflict Constraints Injustice Workload Personal Gender Hostile attribution Locus of control Trait Anger Trait Anxiety Emotion Anger Anxiety Depression Frustration Aggression Violence Control a Vital Element • Low control leads to aggression/violence to deal with stressful incidents • High control leads to constructive acts to deal with stressful incidents Relations With Predictors Variable Behavior Behavior (Employee) (Coworker) Conflict .36 .25 Constraints .25 .12 Justice -.20 -.29 Job satisfaction -.14 -.18 The Relationship of Physical and Psychological Violence With Safety Climate Paul E. Spector, Psychology, USF Martha L. Coulter, Public Health, USF Heather G. Stockwell, Public Health, USF Mary Matz, VA Patient Safety Research Center Work & Stress, 2007 Current Study • • • • Survey of Nurses in a VHA hospital Incidence of physical and verbal assault Relationship of violence climate with assault Relationship of assault with physical and psychological well-being Participants • 198 Nurses • Variety of departments – Medical, surgical, mental health, emergency • All shifts – Day, evening, night Measures • How often assaulted and who assaulted – Physical and verbal – Prior year • Violence climate • Physical symptoms – Digestive problems, Sleep disturbance • Emotional well-being (Brief Symptom Inventory) Abuse Scale • • • • Been yelled or sworn at Been insulted or made fun of Been hit or slapped Been kicked, bit or punched with a fist Safety Climate Items • • • • • • Violence prevention training. Violence prevention policies and procedures. Procedures for reporting violence. Encourage reporting physical violence. Encourage reporting verbal violence. Violence reports taken seriously by management. Incidence Physical Source n Verbal % n % Coworker/ Supervisor Patient 5 9% 38 33% 53 95% 98 85% Patient family 5 9% 20% Total 56 23 115 Correlations Climate Physical assault Verbal assault Abuse Physical Verbal assault assault Abuse Physical Emotional symptoms Well-being -.28 -.32 -.57 -.22 -.26 .34 .63 .31 .31 .35 .30 .30 .34 .41 Conclusions • Physical common: ¼ of nurses – Missing data suggests underreporting • Injuries occurred tended to be minor – Most serious broken bone done by patient • Verbal more common: over ½ of nurses • Patients biggest source for both forms • Verbal climate relates to assault/abuse Week 15: Musculoskeletal Disorders (MSDs) MSD • Acute – Sudden injury – Back injury – Nurse lifting a patient • Chronic – Repetitive strain injury through overuse – Carpal tunnel – Employee typing Common Injury Areas • Upper extremities – Fingers, hand/wrist, elbow, shoulder, neck • Lower extremities – Toes, foot/ankle, knee, hip • Back Symptoms • Numbness • Pain – Muscle – Tendon – Joint • Weakness • Inflammation • Fracture Psychological Factors • Neuroticism and pain • Soft tissue – No obvious physical injury • Malingering – Form of CWB – Relates to injustice? Physical Solutions • Hardware to minimize physical strain • Lifting device for acute • Keyboard design for chronic Patient Lifting Device Split Keyboard Psychological Factors • • • • • • • Heavy workload Low control High work pace Monotonous work Low social support Job dissatisfaction Negative mood Week 16: Future Healthy Work Organization What is a HWO? • Organization that maximizes – Effectiveness/productivity – Employee health, safety, and well-being • Joint Optimization – Socio-technical systems theory • Social and technical systems in balance – Health and Performance systems in balance Sauter HWO Characteristics • • • • • • • • • Quality Career development Strategic planning HR planning Justice Innovation Cooperation Diversity Technology Health Climates • • • • Safety Civility Violence Health Management of Stress • Empowerment/control • Social support • Workload management – Priorities • • • • Schedule flexibility Clear expectations Justice KSAO – Job fit – Selection/Placement – Training – Task assignment Six OHP Topics Linked • As Stressors • As Strains Stressors • • • • • Accidents Illness MSD Violence Work-Family Conflict Strains • • • • • • Response to stressor By-product of behavioral strain Accidents Illness MSD Violence Accident Illness Stressor Violence MSD Work/Family Accident Illness Strain Violence MSD Work/Family Employee Health, Safety, and Well-Being Is a Psychological Problem As Well As a Physical Problem