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PubMed2001

The Spanish National Institutes of Health-Chronic Prostatitis Symptom Index: translation and linguistic validation.

PURPOSE: The prominence of health related quality of life end points in international clinical research underscores the importance of well validated and translated measures to enable cross-cultural comparison. The National Institutes of Health (NIH)-Chronic Prostatitis Symptom Index (CPSI) assesses symptoms and health related quality of life in men with chronic nonbacterial, NIH type III prostatitis. To expand its use to Spanish speaking patients we performed a translation and linguistic validation. MATERIALS AND METHODS: The 9-item NIH-CPSI was translated into Spanish according to a standard methodology of 2 forward translations, 1 reconciled version, back translation of the reconciled version and 3 independent reviews by bilingual experts. The purpose of this methodology was to create a single universal Spanish version that would be acceptable to native Spanish speakers inside and outside of the United States. After the translation process the Spanish version was pre-tested in Argentina, Mexico, Spain and the United States. Patient responses were analyzed to identify necessary modifications. The internal consistency of the CPSI was evaluated using Cronbach's alpha. Pearson's product moment correlations were used to evaluate construct validity. RESULTS: Data were collected from chronic prostatitis patients, including 15 in Argentina, 15 in Mexico, 4 in the United States and 3 in Spain. The translation had high reliability overall and in all subscales (Cronbach's coefficient alpha = 0.81 to 0.94), and the subscales correlated well with each other (r = 0.76 to 0.97). However, patients expressed difficulty in distinguishing the response categories "a menudo" ("often") from "normalmente" ("usually") in question 3. We revised "a menudo" to "muchas veces" ("much of the time") and "normalmente" to "casi siempre" ("almost always") to improve the distinctiveness of response categories. CONCLUSIONS: The Spanish NIH-CPSI has high reliability as well as face and construct validity in Spanish speaking men from various countries. The Spanish NIH-CPSI permits cross-cultural comparisons of men with chronic nonbacterial prostatitis.

Adult↗

PubMed1995

Child abuse potential inventory and parenting behavior: relationships with high-risk correlates.

The primary purpose of this research was to examine the construct validity of the Child Abuse Potential Inventory by comparing maltreating and high-risk parents' CAP Inventory abuse scores to their behavior during interactions with their children. A second purpose was to determine the degree to which CAP Inventory scores and parenting behavior were related to several known correlates of abuse, as measured by parent and teacher reports. Participants (n = 41) included abusive and high-risk parents and their children referred to a treatment group. Correlational analyses revealed that CAP Inventory scores and observed parenting style yielded highly related findings, supporting construct validity of the CAP Inventory. However, the CAP Inventory and observed behavior index showed a different pattern of relationships to the risk correlates. Implications for assessment of risk status are discussed and recommendations are provided for continued research.

Adult↗

PubMed2006

Questionnaire for assessing parents' concerns about their child with hydrocephalus.

The many concerns of parents of children with hydrocephalus have not previously been assessed using a reliable, quantitative measurement. The development and preliminary use of a questionnaire to measure the concerns of these parents is reported. A general health status measure for hydrocephalus was developed concurrently. Items were generated primarily from parent focus groups resulting in a comprehensive list of 22 unique parental concern items. The most important of these items, as selected by another sample of parents of 60 children (27 females, 33 males; mean age 8y 4mo, [SD 4y 6mo]) were retained for the final questionnaire. This 9-item parental concerns questionnaire was tested for reliability and construct validity (by assessing correlations with various independent measures of health status, including Health Utilities Index-2 and Impact-on-Family Scale) using a cohort consisting of the parents of 80 children (39 females, 41 males; mean age 10y, [SD 3y 6mo]). An exploratory analysis was performed to determine which patient variables were associated with greater parental concern. The parental concerns questionnaire demonstrated excellent test-retest reliability (0.86, 95% CI 0.77-0.92) and internal consistency (Cronbach's alpha=0.89). As expected, interrater reliability was somewhat lower (0.67, 95% CI 0.49-0.79). Construct validity was demonstrated by consistently moderate Pearson's correlations with several independent measures of the child's health. The presence of epilepsy and younger patient age appeared to be significantly associated with greater parental concern. This new questionnaire has demonstrated very good psychometric properties. It can be used to broaden the scope of future clinical research in pediatric hydrocephalus to include the impact on parents.

Adult↗

PubMed1976

Psychometric properties of the Self-Rating Depression Scale (SDS).

While there are data supporting the content and construct validity of the Self-Rating Depression Scale (SDS), the evidence regarding its reliability is not conclusive. For the purpose of exploring the psychometric properties of the SDS, two studies were done using Ss from two markedly different socio-cultural settings: 213 male and female drug addicts in New York City and 206 male and female undergraduates in Nigeria. Findings included high coefficient alphas and large average item-correlations (total minus item) in both studies. It was concluded that the SDS rates well in terms of internal consistency reliability and construct validity.

Depression↗

PubMed2001

CHAMPS physical activity questionnaire for older adults: outcomes for interventions.

PURPOSE: To evaluate effectively interventions to increase physical activity among older persons, reliable and valid measures of physical activity are required that can also detect the expected types of physical activity changes in this population. This paper describes a self-report physical activity questionnaire for older men and women, developed to evaluate the outcomes of the Community Healthy Activities Model Program for Seniors (CHAMPS), an intervention to increase physical activity. METHODS: The questionnaire assesses weekly frequency and duration of various physical activities typically undertaken by older adults. We estimated caloric expenditure/wk expended in physical activity and created a summary frequency/wk measure. We calculated measures of each of these for: 1) activities of at least moderate intensity (MET value >/= 3.0); and 2) all specified physical activities, including those of light intensity. Six-month stability was estimated on participants not likely to change (assessment-only control group, physically active cohort). Several tests of construct validity were conducted, and sensitivity to change was analyzed based on response to the CHAMPS intervention. RESULTS: The sample (N = 249) comprised underactive persons (N = 173 from the CHAMPS trial) and active persons (N = 76). The sample was aged 65-90 yr (mean = 74, SD = 6); 64% were women, and 9% were minorities. Six-month stability ranged from 0.58 to 0.67, using intraclass correlation coefficients. Nearly all construct validity hypotheses were confirmed, though correlations were modest. All measures were sensitive to change (P < or = 0.01), with small to moderate effect sizes (0.38-0.64). CONCLUSIONS: The CHAMPS measure may be useful for evaluating the effectiveness of programs aimed at increasing levels of physical activity in older adults.

Aged↗

PubMedDate not supplied

[Cortico-orbital frontal functions and psychophysiological features of DSM-IV personality disorders].

The purpose of the study was to analyze the construct validity of DSM-IV categories and clusters for personality disorders, using computerized neuropsychological measures exploring frontal executive functions, such as vigilance or sustained attention, mental flexibility, planning and concept formation (Stroop, CPT, WCST); and psychophysiological records of heart rate and skin electric response to experimental stress, and recovery slope in both measures. The sample consisted of 138 participants (66 males and 72 females), with ages between 17 and 65 years, which received a diagnosis of any personality disorder, according to DSM-IV criteria. The results exclusively confirm, to some extent, the construct validity of cluster A, mainly based on neuropsychological deficits, but differences between categories were much more diffuse.

Adolescent↗

PubMed2001

Reliability and validity of systemic lupus activity measure-revised (SLAM-R) for measuring clinical disease activity in systemic lupus erythematosus.

New clinical scales for semiquantitating disease activity in systemic lupus erythematosus (SLE) are widely used in research. They are reliable and valid measures. One of the original scales, the Systemic Lupus Activity Measure (SLAM), has been modified based on experience with it in multi-observer studies and training of individuals in its use. We tested the psychometric properties of the revised SLAM (SLAM-R). SLAM-R was tested on 30 SLE patients, who fulfilled 1997 revised ACR criteria and were selected to represent a range of disease activity. The patients were evaluated independently by two physicians, who studied the instruction booklet and who had never used SLAM-R, on two occasions 2-4 weeks apart. At the first visit, the physician's global assessment of activity using visual analog scale, anti-dsDNA Ab, C3 and C4 were checked for construct validity. The psychometric properties were analyzed with nested analysis of variance and Pearson's correlation coefficient using SAS. All patients were female, the median age was 31 (15-52) y, and the mean score of SLAM-R was 10.5 +/- 5.3 (3-26). Estimates of reliability were 0.78 of inter-rater, 0.61 of inter-visit, 0.76 of physician 1 between visits, and 0.56 of physician 2 between visits. Among subcategories except 'Eye,' the 'Gastrointestinal' category had the highest (0.96) and the 'Neuromotor' category had the lowest inter-rater reliability (0.50). With respect to construct validity, the correlation of SLAM-R scores with the disease activity variables except C4 was high and statistically significant. In conclusion, the SLAM-R is reliable and valid for measuring clinical disease activity in SLE.

Adolescent↗

PubMed1997

Using the ICSOoL to measure the impact of lower urinary tract symptoms on quality of life: evidence from the ICS-'BPH' Study. International Continence Society--Benign Prostatic Hyperplasia.

OBJECTIVE: To present and describe the validity and reliability of the International Continence Society-Benign Prostatic Hyperplasia study quality-of-life (ICSQoL) instrument, a new set of questions to assess the impact of lower urinary tract symptoms (LUTS) on quality of life (QoL) in middle-aged and elderly men. PATIENTS AND METHODS: The study comprised 1271 consecutive men over the age of 45 years, attending urology departments in 12 countries, with LUTS and possible benign prostatic obstruction who were recruited to the ICS-'BPH' study (the clinic group); 423 ambulant men were recruited from a general practice in the UK to provide a community group. Each individual completed the ICS-'BPH' study questionnaire which includes six items addressing general and specific aspects of QoL (the ICSQoL). Content and construct validity were assessed by interviews with patients and by testing hypotheses within the study groups, e.g. the relationships with age, individual LUTS (as measured on the ICSmale questionnaire) and generic health status, as measured by the Short Form (SF-36) and EuroQol instruments. Reliability was assessed by measures of internal consistency and a test-retest analysis. RESULTS: The ICSQoL items were easily understood by patients, were completed with low levels of missing data, and address some (but not all) concerns about the impact of LUTS on QoL. The ICSQoL items have good construct validity, showing expected differences between community and clinic samples, and expected relationships with each other and individual LUTS. Items had good test-retest reliability, but their internal consistency was poor, confirming that ICSQoL questions should not be combined into a score. General ICSQoL items were closely related with most domains of the SF-36 and the EuroQol. CONCLUSION: ICSQoL items may be used individually or as a group in research studies or in clinical practice.

Aged↗

PubMed2004

Cross-cultural adaption of the Manniche questionnaire for German-speaking low back pain patients.

OBJECTIVE: To develop and validate a cross-cultural version of the Manniche Low Back Pain Rating Scale (MRS) for use in German-speaking low back pain patients. BACKGROUND: Clinical intervention research in back pain would be enormously facilitated if a small number of relevant, patient-centred questionnaires became internationally used. MRS seems to be particularly suitable for cross-cultural adaptation due to its coverage of multidimensional back pain-specific health domains. METHODS: MRS was translated and back-translated, pretested and reviewed by a committee. The German version was tested in 126 patients with low back pain from all countries of German-speaking Europe. Reliability (subsample n = 20), dimensionality and construct validity was assessed. Single-dimensionality, higher correlations of MRS with the physical scales compared with the mental scales of the MOS SF-36, a moderate to good correlation with the Roland Morris Questionnaire and a low correlation with the Finger Floor Distance were hypothesized. RESULTS: Spearman's Rho for test-retest reliability was 0.98 (p < 0.001); Cronbach's alpha 0.95. Factor analysis revealed only 1 factor with an Eigenvalue >1 [3.25]. MRS was strongly correlated with the Roland Morris Questionnaire (r = 0.91), and slightly correlated with the Finger Floor Distance (r = 0.23). Correlations of MRS with domains of the SF-36 "Physical Functioning", "Role Physical" and "Bodily Pain" were higher (r -0.66 to -0.72) than with "Role Emotional", "Mental Health" and "Social Functioning" (r -0.34 to -0.61). CONCLUSION: The German version of the MRS seems to be reliable, uni-dimensional and construct valid for the assessment of functional status in German-speaking low back pain patients.

Adult↗

PubMed2000

Assessing perceived need for mental health care in a community survey: development of the Perceived Need for Care Questionnaire (PNCQ).

BACKGROUND: The Perceived Need for Care Questionnaire (PNCQ) was designed for the Australian National Survey of Mental Health and Wellbeing. The PNCQ complemented collection of data on diagnosis and disability with the survey participants' perceptions of their needs for mental health care and the meeting of those needs. The four-stage design of the PNCQ mimics a conversational exploration of the topic of perceived needs. Five categories of perceived need are each assigned to one of four levels of perceived need (no need, unmet need, partially met need and met need). For unmet need and partially met need, information on barriers to care is collected. METHODS: Inter-rater reliabilities of perceived needs assessed by the PNCQ were examined in a study of 145 anxiety clinic attenders. Construct validity of these items was tested, using a multi-trait multi-method approach and hypotheses regarding extreme groups, in a study with a sample of 51 general practice and community psychiatric service patients. RESULTS: The instrument is brief to administer and has proved feasible for use in various settings. Inter-rater reliabilities for major categories, measured by the kappa statistic, exceeded 0.60 in most cases; for the summary category of all perceived needs, inter-rater reliability was 0.62. The multi-trait multi-method approach lent support to the construct validity of the instrument, as did findings in extreme groups. CONCLUSIONS: The PNCQ shows acceptable feasibility, reliability and validity, adding to the range of assessment tools available for epidemiological and health services research.

Australia↗

PubMed1998

The UCLA Prostate Cancer Index: development, reliability, and validity of a health-related quality of life measure.

OBJECTIVES: The need for accurate measures of health-related quality of life (HRQOL) in men treated for prostate cancer is of paramount importance because patients may survive for many years after their diagnosis. Hence, interest has increased in choosing treatments that optimize both the quality and quantity of life in patients with this disease. This study sought to develop and evaluate a self-administered, multiitem, disease-specific instrument to capture the health concerns central to the quality of life of men treated for early stage prostate cancer. METHODS: After focus group analysis and pilot testing, the instrument was tested with a large retrospective, cross-sectional survey. Exploratory factor analysis and multitrait scaling analysis were used to facilitate the formation of six scales containing 20 disease-targeted items that address impairment in the urinary, bowel, and sexual domains. The psychometric properties of the new scales were assessed by measuring test-retest reliability, internal consistency reliability, and construct validity. Performance on the new scales was compared with scores on other established cancer-related health-related quality of life instruments. Two hundred fifty-five long-term survivors of prostate cancer treatment and 273 age-matched and ZIP code-matched comparison subjects without prostate cancer from a large managed care population in California were studied. Mean age was 72.7 years. In addition to the new scales, the RAND 36-Item Health Survey (SF-36) was used as a generic core measure, and a cancer-related health-related quality of life instrument (the Cancer Rehabilitation System-Short Form) was used to provide construct validity. RESULTS: For the new scales, test-retest reliability ranged from 0.66 to 0.93, and internal consistency ranged from 0.65 to 0.93. Disease-targeted measures of function and bother in the three domains correlated substantially with one another. Scale scores correlated well with related, established scales. Men undergoing prostatectomy or pelvic irradiation demonstrated the expected differences in performance on the disease-specific health-related quality of life scales when compared with each other or with comparison subjects. Age was inversely related to sexual and bowel function. CONCLUSIONS: The UCLA Prostate Cancer Index performed well in this population of older men with and without prostate cancer. It demonstrated good psychometric properties and appeared to be well understood and easily completed. The high response among patients suggests that these men especially are interested in addressing both the general and disease-specific concerns that impact their daily quality of life.

Aged↗

PubMed2000

Evaluation of an instrument to assess the needs of patients with cancer. Supportive Care Review Group.

BACKGROUND: This study aimed to assess the face, content, and construct validity and the internal reliability of a tool for assessing the generic needs of patients with cancer (the Supportive Care Needs Survey). METHODS: A total of 1,492 consecutive patients attending the surgical, radiation, or medical oncology departments of 9 cancer treatment centers in New South Wales, Australia, were asked to participate. Of the 1,370 eligible patients, 1,354 (99%) consented to participate and 888 (65%) completed the survey. Eligible consenting patients were given a Supportive Care Needs Survey to complete at home and return by mail within 7 days. RESULTS: In the assessment of construct validity, the principal components method of factor analysis identified 5 factors with eigenvalues greater than 1, which together accounted for 64% of the total variance (patients' needs in the domains of psychologic, health system and information, physical and daily living, patient care and support, and sexuality). Face and content validity were found to be high following pilot tests and tests of reading ease. Internal reliability coefficients (Cronbach alpha) of all 5 factor-based scales were found to be substantial, ranging from 0.87 to 0.97. CONCLUSIONS: These findings suggest that the Supportive Care Needs Survey provides a reliable and valid index of the global needs of oncology patients. The standardized and widespread application of this instrument is recommended following further refinement and evaluation.

Activities of Daily Living↗

PubMed2005

An empirical evaluation of the Arizona sexual experience scale and a simple one-item screening test for assessing antipsychotic-related sexual dysfunction in outpatients with schizophrenia and schizoaffective disorder.

We examined the reliability and construct validity of the 5-Item Arizona Sexual Experience Scale (ASEX) in patients with schizophrenia or schizoaffective disorder. In addition, we assessed the performance of two 1-item screening questions to detect sexual dysfunction as defined by a cut-off scoring criteria of sexual dysfunction for the ASEX. One question was a general question about any side effects. The second question asked specifically about sexual dysfunction. Altogether 247 participants with a DSM-IV diagnosis of schizophrenia or schizoaffective disorder provided data at a single interview. Results indicated that the ASEX has good internal consistency and construct validity for the patients with schizophrenia and schizoaffective disorder. The point-biserial correlations and logistic regression found a high degree of agreement between the one-item specific screening question for sexual dysfunction and the ASEX. Overall, sensitivity (85%), specificity (63.7%), and positive (83%) and negative (67.1%) predictive values for the specific one-item screening question were satisfactory. The single general side effect question performed poorly (sensitivity=11.3%; specificity=92.5%; positive predictive value=76%; negative predictive value=33%). The current findings demonstrate the highly acceptable psychometric properties of the ASEX in patients with schizophrenia or schizoaffective disorder. In addition, a specific one-item screening question is of clinical utility in patients with schizophrenia or schizoaffective disorder.

Adult↗

PubMed2002

The comparison of the behavioral observation system and the brief psychiatric rating scale-expanded.

The construct validity of the Behavioral Observation System (BOS), an observational instrument used by line staff to rate psychopathological behaviors, was studied using comparisons with the Brief Psychiatric Rating Scale-Expanded version (BPRS-E). A sample of 100 inpatient participants was rated using the BPRS-E on the same day they were rated by line staff using the BOS. Pearson product-moment correlations were performed, supporting good convergence and divergence. Principle component analysis on the six BPRS-E scales and the four BOS scales resulted in a three-factor finding. This analysis was supportive of construct validity. Uses of the BOS in light of these findings were discussed.

Adult↗

PubMed2002

Goal attainment scaling in the rehabilitation of patients with lower-extremity amputations: a pilot study.

OBJECTIVE: To assess the interrater reliability, construct validity, and responsiveness of Goal Attainment Scaling (GAS) among patients who have had lower-extremity amputations. DESIGN: Pilot study comparing GAS with 2 functional measures with established reliability, validity, and responsiveness values. SETTING: Regional amputee program in southwestern Ontario. PARTICIPANTS: Ten patients (6 women, 4 men; mean age +/- standard deviation, 72.3+/-10.7 y) with unilateral lower-extremity amputations who were consecutively admitted to a regional amputee program. The ratio of transtibial to transfemoral amputations was 6:4. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Subjects were assessed by using GAS, the Barthel Index, and the Locomotor Capabilities Index (LCI) of the Prosthetic Profile of the Amputee. RESULTS: The interrater reliability of GAS was r=.67, and 63% of goals developed were identified independently by both investigators. The construct validity between GAS and the Barthel Index and the LCI was r=.44 and r=.35, respectively. GAS was more responsive than both the Barthel Index and the LCI, as indicated by the calculation of effect sizes and relative efficiencies. CONCLUSION: This pilot study suggests that GAS is a promising outcome measure for the rehabilitation of patients with lower-extremity amputations.

Activities of Daily Living↗

PubMed2001

Evaluating the psychometric properties of a scale to measure medical students' career-related values.

PURPOSE: To develop and validate a survey instrument to measure medical students' career-related values. METHOD: A literature review yielded seven content domains that consistently correlated with medical students' career choices: biosocial orientation, bioscientific orientation, academic interest, prestige, income, desire to avoid role strain, and desire for role support. Item pools for the content domains were developed by examining previously published questionnaires and research and by interviewing health professionals, medical students, and premedical students. The instrument was tested in two phases. In phase 1, a 96-item questionnaire was mailed to all 847 students at the University of Minnesota School of Medicine. Results were submitted to item analysis and exploratory factor analysis. Construct validity of the questionnaire was assessed by (1) seeing if the seven scales correlated to one another in expected directions, (2) correlating students' survey responses with their self-reported interests in primary care, surgery, or radiology, and (3) seeing if anticipated sex differences were realized across the seven content domains. In phase 2, a random subgroup of 134 students was sent the final 46-item instrument twice to determine its short-term test-retest reliability. RESULTS: In phase 1, 670 students (79.2%) returned usable questionnaires. Seven scales corresponding to the content domains emerged from factor analyses. Cumulatively, they accounted for 43.9% of the variance in students' responses, and their internal consistency coefficients ranged from.71 to.87. All scales correlated with one another in the directions expected and, with two exceptions, at highly significant levels. High scores on bioscientific orientation, prestige, and income scales correlated positively with students' interest in surgery or radiology careers, but correlated negatively with their interest in primary care. High scores on biosocial orientation and avoid role strain scales correlated positively with students' interest in primary care, but correlated negatively with students' interest in surgery or radiology. Women had higher scores than did men on biosocial orientation, avoid role strain, and role support scales and lower scores on bioscientific orientation, academic interest, prestige, and income. Of these, all but the difference in role support scores were highly significant. In phase 2, 89 students (66%) returned questionnaires. Test-retest reliability for the seven scales ranged from.83 to.92. CONCLUSIONS: The seven scales pertaining to students' career-related values collectively demonstrated high internal consistency, short-term test-retest reliability, and evidence of construct validity. If predictive validity can be demonstrated in future research, the scales could have important applications for researchers, guidance counselors, and students, and they might also be useful to administrators who wish to identify students interested in primary care earlier in the students' training.

Adult↗

PubMed2004

A revised Spanish version of the Beck Depression Inventory: psychometric properties with a Puerto Rican sample of college students.

The Beck Depression Inventory (BDI) is a widely used self-report measure for depression. This study has two objectives: (a) to revise, develop, and adapt a Spanish language BDI (BDI-S) that takes the criteria for the diagnosis of major depression according to the DSM-IV into consideration; and (b) to evaluate the psychometric properties (internal reliability and construct validity) of the revised version of the BDI (BDI-S). A sample of 351 undergraduate students at the University of Puerto Rico participated in this study. The participants who agreed to participate in the study and signed the consent form completed self-report measures related to depression (BDI-S, CES-D, and LCSd-7), dysfunctional cognition (DAS-A and IBT), stressful life events (LES), and social support (CAS). The coefficient of internal consistency obtained for the 22 BDI-S items was.88. The correlation coefficients between the BDI-S and instruments that measured other constructs (not depression) were lower than the correlation coefficients between instruments that measured the same constructs. Factor analysis revealed that the factor loading for the BDI-S was congruent with dimensions of depression reported in the literature. These results generally support the internal consistency and the construct validity of the BDI-S.

Adolescent↗

PubMed2006

Continued psychometric evaluation of an intuition instrument for nursing students.

PURPOSE: The purpose of this study was to evaluate the psychometric properties of a revised intuition instrument developed for nursing students. METHOD: Principal component factor analysis was used to establish construct validity, and the Cronbach's alpha was used to examine reliability. FINDINGS: Statistical analysis resulted in a 26-item intuition instrument with 6 factors accounting for 62% of the variance. The factors were labeled as Feelings That Reassure (27.7%), Spiritual Connections (10.9%), Feelings That Alert (8.4%), Feelings That Forewarn (5.8%), Physical Sensations That Alert (4.7%), and Reading Physical Cues (4.2%). Eigenvalues ranged from 1.100 to 7.225, and factor loadings ranged from .572 to .848. The overall Cronbach's alpha was .89 with a range of .73 to .85 for each factor. CONCLUSIONS: The 26-item intuition instrument showed evidence of construct validity and reliability. IMPLICATIONS: The intuition instrument can serve as a stimulus to foster students' intuitive abilities.

Adult↗